Main definitions of on in English

: on1ON2ON3

on1

preposition

  • 1Physically in contact with and supported by (a surface)

    ‘on the table was a water jug’
    ‘she was lying on the floor’
    ‘a sign on the front gate’
    • ‘I was standing on a chair in front of the mirror while Mother dressed me and combed my hair.’
    • ‘She felt his hands on her shoulders.’
    • ‘There was a definite angle and there was no way we could sleep on it.’
    • ‘There was a crystal vase filled with flowers on the table.’
    • ‘For the first time in months it would be possible to eat a meal set out on it.’
    • ‘Every day she eats beans on toast.’
    • ‘They were both sitting on the couch, looking at magazines.’
    • ‘There was a notice on the door saying that due to technical issues the shop will be closed indefinitely.’
    • ‘Looking around the room I notice a computer on his desk.’
    • ‘There were wonderful pictures on the wall.’
    1. 1.1 Located somewhere in the general surface area of (a place)
      ‘an internment camp on the island’
      ‘the house on the corner’
      • ‘We buy some fresh bread from the only shop on the island.’
      • ‘He tracks them through the forest and marshlands and finally finds that they have taken refuge inside a shack on the riverbank.’
      • ‘There is a large prison on the moor, where more than a thousand convicts are confined.’
      • ‘Originally the local county councillors wanted to sell the land to build a new church on it.’
      • ‘Nearly every town on the coast and islands has an equipped marina.’
      • ‘These are times I wish I had a house on the beach.’
      • ‘The only surviving Georgian house on the street was semi-derelict.’
    2. 1.2 As a result of accidental physical contact with.
      ‘he banged his head on a beam’
      ‘one of the children had cut a foot on some glass’
      • ‘I am glad I didn't cut myself on the broken glass.’
      • ‘While walking he stubbed his toe on a sharp rock.’
      • ‘He did his best not to cut himself on the jagged edge of the can.’
      • ‘She fell and lightly grazed her knee on the sidewalk.’
      • ‘He banged his elbow on a marble countertop while cleaning dishes at his home.’
      • ‘He tripped on a discarded shoe box and hit his head on an open desk drawer.’
      • ‘The healthcare worker injured herself on the exposed needle.’
      • ‘She bumped her head on the ceiling.’
    3. 1.3 Supported by (a part of the body)
      ‘he was lying on his back’
      • ‘Kelly underwent 11 major surgeries and spent long hours stretched out on her back, on a morphine drip.’
      • ‘Did you ever get concerned about your little toddler walking around on his tiptoes all the time?’
      • ‘He asked if I wanted a drink and got down on all fours while he looked in the mini-bar.’
      • ‘The horse reared back on its hind legs.’
      • ‘The longest recorded duration for balancing on one foot is 76 hours 40 minutes.’
      • ‘If he is lying on his front, put a pad under his forehead to extend his neck and free his airway.’
      • ‘Why do flamingos stand on one leg?’
      supported by, resting on, in contact with
      View synonyms
    4. 1.4 So as to be supported or held by.
      ‘put it on the table’
      • ‘He dropped his bag on the floor and sat on the couch.’
      • ‘I put my hand on his shoulder.’
      • ‘Hang your coat on the hook there and let's go to the kitchen for tea.’
      • ‘Put a large blob of mayonnaise on the side of the plate.’
      • ‘He put the empty bottle on the desk.’
      • ‘I put the shopping on the passenger seat and started to drive home.’
      • ‘He put my resume down on his desk and rubbed the bridge of his nose.’
    5. 1.5 In the possession of (the person referred to)
      ‘she only had a few dollars on her’
      • ‘She had her phone on her at all times.’
      • ‘He reached into his pocket, only to discover that he didn't have his wallet on him.’
      • ‘If they do not have any money on them, the police take them to the police station.’
      • ‘I'll give you my agent's number, but I don't have it on me right now.’
      • ‘I'll treat you to lunch, but I only have 20 dollars on me.’
  • 2Forming a distinctive or marked part of (the surface of something)

    ‘a scratch on her arm’
    ‘a smile on her face’
    • ‘The bike had a black seat with a white stripe on it, a white rim round the wheels and orange pedals.’
    • ‘My son has a bruise on his forehead.’
    • ‘The bag is black with a white cross on it, and contained a brown purse and gold loop earrings.’
    • ‘I looked in the mirror and noticed a mark on my chest.’
    • ‘I've got a nasty scratch on my car.’
    • ‘We had to identify him by one of his trainers and a schoolbag with his name on it.’
    • ‘She made Eric a cake with a cow on it as a leaving gift.’
    • ‘In the examining room, Dr. O'Brien was silent as he looked at the mole on her leg.’
    • ‘The oil made a dark stain on the carpet.’
    • ‘He had an angry look on his face.’
  • 3Having (the thing mentioned) as a topic.

    ‘a book on careers’
    ‘essays on a wide range of issues’
    • ‘An Australian film crew were making a documentary on Asian footballers who play in Europe.’
    • ‘After I began writing this article, a passionate debate on the same subject erupted in an online discussion forum.’
    • ‘A very interesting conversation on language and writing ensued.’
    • ‘The details on side effects are listed in Table 2 of the online supplement.’
    • ‘I attempted to understand the articles on cricket but failed miserably.’
    • ‘I want to write a book on how to eat properly.’
    • ‘I watched a show last night on advances in forensic science.’
    regarding, concerning, with reference to, referring to, with regard to, with respect to, respecting, relating to, on, touching on, dealing with, relevant to, with relevance to, connected with, in connection with, on the subject of, in the matter of, apropos, re
    View synonyms
    1. 3.1 Having (the thing mentioned) as a basis.
      ‘modeled on the Mayflower Compact’
      ‘dependent on availability’
      • ‘There are many ways to make iced tea, and countless variations on the basic recipe.’
      • ‘How often they remove the snow is dependant on the weather.’
      • ‘On their advice I sold most of my shares.’
      • ‘If you need a prototype built on a new design, we can handle it.’
      • ‘Traditional Cambridge colleges, modelled on monastic cloisters, consist of courts surrounded by walls of individual rooms.’
      • ‘The film is based on a true story.’
      • ‘The lame argument for using this datum is that some of the paper maps were based on it.’
  • 4As a member of (a committee, jury, or other body)

    ‘they would be allowed to serve on committees’
    • ‘I wish all the people on the committee well as there are some good and willing people on it.’
    • ‘A large proportion of members are unwilling to consider serving on the board.’
    • ‘She sits on a number of high-profile advisory groups.’
    • ‘I knew he was on the jury but did not talk to him about it.’
    • ‘He was on several committees and was a former Lord Mayor.’
    • ‘She served on many advisory councils and boards.’
  • 5Having (the thing mentioned) as a target, aim, or focus.

    ‘five air raids on the city’
    ‘thousands marching on Washington’
    ‘her eyes were fixed on his dark profile’
    • ‘The colourful protest marched on the Scottish Parliament.’
    • ‘The police descended on the premises in large numbers.’
    • ‘Armed raiders escaped with around €20,000 during a daring raid on a busy hotel in west Dublin early yesterday morning.’
    • ‘They never actually engaged in close combat by firing on the enemy.’
    • ‘They're planning an attack on the city.’
    • ‘The priest, to my surprise, launched into a verbal assault on me.’
  • 6Having (the thing mentioned) as a medium for transmitting or storing information.

    ‘put your ideas down on paper’
    ‘stored on the client's own computer’
    • ‘The data on the hard drive may still be salvageable.’
    • ‘I was taught in college that one ought to figure out a program completely on paper before even going near a computer.’
    • ‘It's not as if the ready availability of rock music on CD stops people going to rock concerts.’
    • ‘Marc used to say ‘If it's not on the Internet, it doesn't exist.’’
    • ‘Operations are routinely recorded on video tape for teaching purposes.’
    • ‘The amount of new information stored on paper, film, magnetic and optical media has roughly doubled in the last three years.’
    • ‘I spent a lot time driving and listening to books on tape.’
    • ‘I have the whole series on tape.’
    • ‘All of these films are available in restored, good quality editions and most are now available on DVD.’
    1. 6.1 Being broadcast by (a radio or television channel)
      ‘a new TV series on Channel 4’
      • ‘He is transfixed by footage of riots showing on Sky News.’
      • ‘One of my favourite sketch shows is being repeated on radio four at the moment.’
      • ‘The show will be broadcast on CBS on December 26th.’
      • ‘The animated short film The Snowman was a huge success when it appeared on Channel 4 in 1982.’
      • ‘She now presents religious and travel programmes on BBC TV.’
      • ‘He is branching out into work as a television presenter, with his own science programme on the Discovery Channel.’
      • ‘I enjoyed the show when it aired on MTV.’
  • 7In the course of (a journey)

    ‘he was on his way to see his mother’
    • ‘I felt really lonely in the car on the drive home.’
    • ‘I'm on my way right now.’
    • ‘During a quiet moment on the expedition, Emma gazes at the Surrey landscape spread out before her.’
    • ‘Her symptoms grew increasingly bad during the two-week holiday and her leg became very painful on the trip back to Manchester.’
    • ‘I stopped to pick up a gallon of milk on my way home from work.’
    • ‘You'll see all manner of birdlife on the journey to the only tented camp in the National Park.’
    1. 7.1 While traveling in (a public conveyance)
      ‘John got some sleep on the plane’
      • ‘On the boat back to Europe he basically stayed in his room and drank.’
      • ‘The boys fall asleep on the train.’
      • ‘I picked up a copy of the magazine to read on the plane this week.’
      • ‘They both had their knapsacks stolen on the train.’
      • ‘I read and wrote on the plane home.’
      • ‘On the ferry over I talked to some American missionaries helping with the relief effort.’
      • ‘The music scene was full of underfed, hard working guys who wrote songs on the bus or in motel rooms.’
    2. 7.2 Onto (a public conveyance) with the intention of traveling in it.
      ‘we got on the train’
      • ‘I met him for the first time three weeks ago, when we climbed on the buses to head out to our units.’
      • ‘I had a great deal of apprehension getting on the plane to fly to Japan.’
      • ‘As our conductor hollered we ran and clambered on the bus back home.’
      • ‘I got on the bus and went into New York.’
      • ‘From here you can pick up a rowing boat or hop on the ferry.’
      • ‘We were among the last to get on the coach and had to take whatever seats were left.’
      • ‘Peg and Matt enjoy being able to hop on the train to Chicago to go to a lecture or eat at a trendy restaurant.’
  • 8Indicating the day or part of a day during which an event takes place.

    ‘reported on September 26’
    ‘on a very hot evening in July’
    • ‘On Saturday night we went to a football match.’
    • ‘Despite the protests, the secrecy of proceedings and the bitter collapse of talks on the last day, progress was made.’
    • ‘The idea of allowing employees to dress down on the final day of the week seemed completely harmless to most observers.’
    • ‘Napoleon died on the evening of 5 May 1821.’
    • ‘The children of employees join their parents for a day at the office on Christmas Eve.’
    • ‘They will be married on her birthday.’
    • ‘On the first Monday following Twelfth Night, the corn dolly would be ploughed back into the soil so that its spirit would be released and ensure a good harvest.’
    • ‘He had been forced to use his bicycle to get to work because his car had broken down on the morning of the accident.’
    1. 8.1 At the time of.
      ‘she was booed on arriving home’
      • ‘The team was given a great reception on arrival back in Swinford with the Cup.’
      • ‘The first thing I saw on entering was a life-size model of a heron standing on a counter.’
      • ‘On closing the door she wondered if she had imagined the smirk on his face.’
      • ‘Rowena was surprised to find, on walking into the meeting room at the hotel, that most of her co-workers had already arrived.’
      • ‘He had a commission in the RAF and on leaving in 1990 he joined the Territorial Army.’
      • ‘On his return to Italy in 1945, he abandoned medicine in favour of painting.’
      • ‘On returning to his house three weeks later, he was arrested and taken to Newgate prison.’
      • ‘On arrival, please sign in at the registration table.’
  • 9Engaged in.

    ‘his attendant was out on errands’
    • ‘When you are on operations it is always nice to receive packages from home.’
    • ‘I thought you were on guard duty today.’
    • ‘Susan was called out of town on business.’
    • ‘Jim's just been on holiday in Scotland.’
    • ‘When you're on vacation or at an out-of-town seminar, go to the local galleries.’
    • ‘She had been on leave caring for a sick child.’
    • ‘We were trained never to stand still when we were out on patrol.’
    • ‘I was working in Los Angeles on assignment.’
  • 10Regularly taking (a drug or medicine)

    ‘he is on morphine to relieve the pain’
    • ‘My Mum and Dad were on heroin before I was born.’
    • ‘Is it safe for her to be on antibiotics for so long?’
    • ‘These days I take five pills a day, but at one point I was on about 20.’
    • ‘Her son had been on drugs for nine years and was desperate to get rid of the habit.’
    • ‘I'm happier than I was three years ago, when I was drinking and I was on cocaine.’
    • ‘Sometime around January my girlfriend went on the pill.’
    • ‘I was on heavy duty painkillers for 48 hours.’
    • ‘I was on about sixty cigarettes a day.’
    • ‘Since I started working out, I don't have to be on prescription drugs any more.’
    • ‘He had been put on prescription drugs to help him cope with coming off crack.’
  • 11Paid for by.

    ‘the drinks are on me’
    • ‘They are already praising you for being ‘such a gentleman’ and promising next time the treat's on them!’
    • ‘If ever we're in the same city, dinner's on me.’
    • ‘Order what you want from any menu. It's all on the house.’
    • ‘The football tickets for the match tomorrow are on you! I'll buy the drinks!’
    • ‘Congratulations guys; the champagne's on us!’
  • 12Added to.

    ‘a few cents on the electric bill is nothing compared with your security’
    • ‘Your friend will receive a 50% deposit bonus up to $50 in bonus dollars on his initial deposit for participating in the program.’
    • ‘It's all too easy to agree to an extra few pounds on the bill, but that could be costly mistake.’
    • ‘We can put another $50 on the course fees.’
    • ‘A few pence on your bid price because you can afford to pay more for it, moves you into maybe the top three positions.’
    • ‘One hundred pounds a year extra on the insurance is not a lot at all.’

adverb

  • 1Physically in contact with and supported by a surface.

    ‘make sure the lid is on’
    • ‘Can I get into the car when the cover is on?’
    • ‘Ben had to come in and help me put the sheets on.’
    • ‘Once the roof was on, the basic structure of the house was completed.’
    • ‘I glued them on and allowed the glue to cure before continuing.’
    • ‘Rinse them in hot water and screw on the lids.’
    • ‘He put the tops on and sealed both glass bottles.’
    1. 1.1 (of clothing) being worn by a person.
      ‘sitting with her coat on’
      ‘get your shoes on’
      • ‘My feet were huge by now and I couldn't get my boots on.’
      • ‘He answered the door and just had a dressing gown on.’
      • ‘With my glasses on I can read signs very far away.’
      • ‘The doctor harumped and shoved his hat on.’
      • ‘‘What did she have on?’ I asked. ‘A pink top and a blue-jean skirt,’ he said.’
      • ‘In the fitting rooms I slipped on the dress and gasped with pleasure.’
      • ‘They all put their jackets on and headed down the driveway.’
      • ‘He hastily pulled on his trousers.’
  • 2Indicating continuation of a movement or action.

    ‘she burbled on’
    ‘he drove on’
    ‘and so on’
    • ‘They ran on, and eventually came into a long hallway.’
    • ‘To learn how you can build muscle while you sleep, read on!’
    • ‘We started at seven in the morning, worked on without a break until twelve, then, after an hour for lunch, continued again until half-past five.’
    • ‘She waited a few moments, and then walked on.’
    • ‘I started competing at 16 and carried on until I was 35.’
    • ‘She cycled on, through the winding streets of the village to the graveyard beside the old stone church.’
    interminably, at length, for a long time, continuously, endlessly, ceaselessly, without a break, without a pause
    View synonyms
    1. 2.1 Further forward; in an advanced state.
      ‘time's getting on’
      ‘later on’
      • ‘Nearly three months on, some of the building work is still not complete.’
      • ‘A year on, most have returned to their previous lives.’
      • ‘Later on, the house was subdivided into seven apartments.’
      • ‘It's getting on. I suppose I'd best get back.’
      • ‘I will discuss this in greater depth later on.’
      • ‘From that moment on, his career as an artist seemed certain.’
      • ‘I need to lock the door, now the evening's drawing on.’
      onward, onwards, forth, forwards
      View synonyms
  • 3(of an entertainment or other event) taking place or being presented.

    ‘what's on at the festival’
    ‘there's a good film on this afternoon’
    • ‘There's a war on, and everybody has to make sacrifices.’
    • ‘The same problem always happens when the fair is on.’
    • ‘The opera festival was on and that helped to create good passing trade.’
    • ‘I wonder what's on at the movies tonight.’
    • ‘Ms Rushton's review of Hicks' artwork, which is on at Abbot Hall until March 9, was entitled A Festival of Sculpture, Drawing and Light.’
    • ‘The City Theatre has a new play on.’
    • ‘The exhibition is on until September 17.’
    • ‘The exhibition ‘Accessories from the Royal Wardrobe’ is on at Kensington Palace State Apartments until April 18 2004.’
    • ‘Turner, Whistler and Monet is on at Tate Britain until the 15th of May, tickets are £10.’
    • ‘For younger theatre-goers, Goldilocks and the Three Bears will be on at St George's Hall.’
    • ‘He flipped through the channels and couldn't find anything good on.’
    1. 3.1 Due to take place as planned.
      ‘the reorganization is still on’
      • ‘Our carnival is definitely still on!’
      • ‘Every time I try and go to a pub quiz, it's not on for some reason.’
      • ‘Are we still on for that drink in July?’
      • ‘Ok guys, the party's on!’
      • ‘They decided not to have an election. Now it's on again.’
      • ‘I thought you cancelled? Is it on or what?’
  • 4(of an electrical appliance or power supply) functioning.

    ‘they always left the lights on’
    • ‘I need an appliance which is not expensive to run, and which can be switched on and off as needed.’
    • ‘The chef had forgotten to put the oven on.’
    • ‘In Cleveland, the power is on, but residents are asked to boil their drinking water.’
    • ‘Food in a refrigerator stays fresh while the power is on, but turns into a disorderly mess if there is no energy being supplied from the mains.’
    • ‘He doesn't know how to turn on the washing machine.’
    • ‘Soon more and more houses will have their electricity on, and life will get back to normal.’
    • ‘By the time the game ended, the lights were on at Fullcast Stadium and the bright sun had dipped behind some clouds.’
    • ‘From time to time the lights go on and off in the auditorium, while the actors continue to perform.’
    • ‘Parents often keep the television on while feeding, dressing, or playing with their children.’
    • ‘He'd also became fond of switching lights on and off to the point where it was almost an obsession.’
    • ‘He asks whether he should spend his time between fog patches switching his lights on and off.’
    • ‘My dad turned the radio on and proceeded to restlessly channel-surf.’
    • ‘The tape player sat on the floor of my bedsit in Bromley, and I used to turn it on and off with my foot.’
    • ‘There is no movement other than a slight change in the shadows as some neon sign far below flicks on and off.’
    functioning, in operation, working, in use, operating
    View synonyms
  • 5(of a performer, etc.) broadcasting or acting.

    • ‘That's your cue. You're on.’
    • ‘Each time she was to perform, Lynn suffered such dread that she was always too sick to go on.’
    • ‘She is on for the first 19 minutes of the show.’
    • ‘I was thinking I might get bored then the lead actor came on.’
    • ‘His understudy had to go on for Act II.’
    • ‘Come on girls, you are on in five minutes.’
    1. 5.1 (of an employee) working.
      • ‘I took midnight to 4am and he was on until 8am.’
      • ‘Abby explains she's on all day as a medical student.’
      • ‘I'm on until we close, probably around four in the morning if the crowd keeps up like this.’
      • ‘My Nurse Manager mailed me my schedule and I'm on every Saturday.’
      • ‘This past weekend was my weekend on, so I really couldn't get away from work properly.’

Phrases

  • be on about

    • informal Talk about tediously and at length.

      ‘she's always on about doing one's duty’
      • ‘He talked a lot about the virtues of tolerance and fair play, but nobody had a clue what he was on about.’
      • ‘I might head back home watch that video your brother was on about.’
      • ‘Our Prime Minister is on about how political correctness is harming free speech and opinion.’
      • ‘I told him I didn't know what he was on about.’
      • ‘Most people watching thought the debates a big bore and could not recall what the candidates were on about.’
      • ‘She was the only person on board who could always understand what he was on about.’
      • ‘When I first arrived out here and started yapping on about a film festival, people didn't know what I was on about.’
      • ‘Half of them texted me back wondering what on earth I was on about.’
      • ‘I am one of these people on a low income she is on about.’
      • ‘Needless to say, no-one had a clue what I was on about.’
  • it's not on

    • informal It's impractical or unacceptable.

      • ‘I would be the first to agree it's not on, but I'm trying to get something done about it.’
      • ‘‘I want to make it really clear, before they even start to discuss it, that it's not on,’ she said.’
      • ‘It doesn't matter whether the offenders are over 75 or under ten, if they make a nuisance of themselves - it's not on.’
      • ‘The woman sat opposite moaned - it's not on, calling ‘Last Orders' early.’
      • ‘They fall out on the street at 6 or 7 in the morning and disturb all the residents, it's not on.’
      • ‘I would just ask the culprits to remember that a lot of people have worked hard to obtain funding for this facility, and that it's not on for them to go around wrecking it just because they are bored.’
      • ‘We could have this problem every day for the next year and it's not on.’
      • ‘I'm not just saying this for us, but the park is for everyone and it's not on.’
      • ‘I know the prime minister's advisors read this site before setting policy, so I'm saying now, it's not on.’
      • ‘It's not on having hundreds of kids running wild all day.’
  • on and off

    • Intermittently.

      ‘it rained on and off most of the afternoon’
      • ‘I have been temping on and off but my overdraft stubbornly refuses to get smaller.’
      • ‘I lived there on and off for five years, leaving it for the last time in 1977 and moving on.’
      • ‘Her husband had connections with the property and may have lived there on and off.’
      • ‘I smoke on and off now, but I don't drink much and have made a lot of changes to my diet.’
      • ‘She suffered from depression on and off since she was young and masked her emotions very well.’
      • ‘He is thought to have worked on and off as a government spy for the rest of his life.’
      • ‘There's a girl at work who's been sick on and off over the past few weeks.’
      • ‘I was warned that the most common side effect was a cough and over the past week or so I've had one on and off.’
      • ‘Most days have had fairly heavy rain on and off so we have not been able to get out in the garden to tidy up.’
      • ‘Simon had worked in the business on and off since childhood.’
  • on and on

    • Continually; at tedious length.

      ‘he went on and on about his grandad's trombone’
      • ‘She took the phone and talked on and on without holding the steering wheel.’
      • ‘He sat down with James in his lap, listening to the little boy babble on and on.’
      • ‘The UN negotiations drag on and on as the international community weakens and loses interest.’
      • ‘He was going on and on in his speech about safety at reasonable cost.’
      • ‘But too many suspensions cases have dragged on and on, wasting large sums of taxpayers' money.’
      • ‘The teacher droned on and on about local history.’
      • ‘During one hot summer, Lisa kept on and on about wanting to go swimming.’
      • ‘He rambled on and on about how different brands compared to others.’
      • ‘The whole show dragged on and on seemingly forever.’
      • ‘I tried to make a big show of looking away from the screen till it was over, but the scene went on and on.’
      for a long time, for ages, for hours, at length, at great length, incessantly, ceaselessly, constantly, continuously, continually, endlessly, unendingly, eternally, forever
      View synonyms
  • what are you on?

    • informal Said to express incredulity at someone's behavior, with the implication that they must be under the influence of drugs.

      • ‘I stopped and looked at them as they stared and Shannon said, ‘what are you on?’’
      • ‘You are getting creepier and more paranoid than normal… what are you on?’
      • ‘For god's sake Holly, what are you on?’
      • ‘Dude, what are you on? Are you still loaded?’
      • ‘Ma, its four in the morning, what are you on? Did you overdose on painkillers again?’
  • you're on

    • informal Said by way of accepting a challenge or bet.

      • ‘I think about it for a moment and I tell him ‘OK, you're on. I'll take your bet.’’
      • ‘Make it £5 and you're on.’
      • ‘If you mean it, you're on! There's lots I could do with three hundred quid.’
      • ‘‘A bottle of tequila says we find it in less than a week,’ Liz said. ‘Make it two, and you're on,’ Isabel said, shaking her hand.’
      • ‘You're on. You come up with a good enough prize for me to win, and I'll be happy to take your bet.’
      agreed, settled, all right, very well, that's a bargain, accepted, right
      View synonyms

Origin

Old English on, an, of Germanic origin; related to Dutch aan and German an, from an Indo-European root shared by Greek ana.

Pronunciation

Main definitions of on in English

: on1ON2ON3

ON2

  • Ontario (in official postal use)

Main definitions of on in English

: on1ON2ON3

ON3

  • Old Norse.