Definition of cracker in English:



  • 1A person or thing that cracks.

    • ‘It was six feet tall and held a rocket launcher in one claw and a giant stainless steel shell cracker in the other.’
    • ‘This gives copyright holders the legal tools in the UK to pursue action against copyright crackers, however benign their intentions.’
    • ‘Any right minded code cracker would know what he just told me.’
    • ‘The remaining states, like Minnesota, provide lots of fun for the determined code cracker.’
    • ‘When the police find someone slain, they call on their resident cracker to interrogate.’
    1. 1.1 An installation for cracking hydrocarbons.
      ‘a catalytic cracker’
      • ‘The company suffered a series of accidents, culminating in a blaze at its catalytic cracker.’
      • ‘Light olefins from the fluid catalytic cracker are processed in either hydrofluoric or sulfuric acid units.’
      • ‘After the completion of the sixth naphtha cracker, its annual production of ethylene could reach 1.15 million tonnes.’
      • ‘The catalytic cracker takes a number of feedstocks, including heavy gas and residue, from the lubricant treatment plant.’
      • ‘The separation costs are a consequence of less than complete conversion for ethane crackers.’
    2. 1.2 A person who breaks into a computer system, typically for an illegal purpose.
      • ‘I said computer crackers were going to cause some serious damage and predicted they'd try blackmail.’
      • ‘Eight million credit cards were exposed to a cracker or crackers this week resulting in huge potential for fraud.’
      • ‘But sometimes your personal data is loaned out to third parties, and that's the weak spot where crackers are able to break in.’
      • ‘Harris believes this modest improvement might lead crackers into targeting computers of home users rather than businesses.’
      • ‘It fears that any information would give vital clues to criminal crackers about how to exploit unpatched systems.’
      • ‘Now that you're here we have an advantage we never had before, a computer cracker!’
      • ‘How long before the crackers intrude upon this cosy intimacy?’
      • ‘The case studies are in-depth descriptions of how three crackers have broken into computers.’
      • ‘In such a case a cracker's actions are obvious: he suppresses the anti-debugging tricks and dumps the unpacked and decrypted application code.’
      • ‘Nor is there any evidence of crackers scanning the Internet in search of vulnerable machines.’
      • ‘Computer crackers have obtained access to computer systems codes used in America's space program.’
      • ‘The user still connects to the Internet, but through the cracker's system.’
      • ‘Although I doubt crackers are attempting to break into your PC as you read this, there's always the possibility.’
      • ‘Computer crackers might exploit this behaviour to inject malicious code into vulnerable systems.’
      • ‘Sure, no electronic voting system is yet safe enough to withstand computer crackers.’
      • ‘Forget about Internet crackers, employees are the biggest security problem for most businesses.’
      • ‘It far from the first time crackers have broken into the web servers of software developers.’
      • ‘On infected machines, it opens a back door that allows a cracker to control the computer using IRC.’
      • ‘Aladdin makes software that protects corporations and their data from attack by computer crackers.’
      • ‘Computer crackers have obtained details of up to five million US Visa and MasterCard accounts, the two firms admitted yesterday.’
  • 2A decorated paper cylinder which, when pulled apart, makes a sharp noise and releases a small toy or other novelty.

    ‘a Christmas cracker’
    • ‘The gathering enjoyed a beautiful four course meal and enjoyed pulling Christmas crackers across the tables.’
    • ‘The cracker fell apart and just hung there all limp in my hand.’
    • ‘They also stole Christmas crackers, toys and snacks from the garden centre's café.’
    • ‘Problem is, you'll have finished the bottle before you start pulling the crackers.’
    • ‘Jeffrey will be sitting down with his paper hat and his cracker contemplating his bright new future.’
    • ‘It seems more like a toy than the real thing - the kind which you might pull out of a cracker.’
    • ‘All the presents were opened, the crackers were pulled.’
    • ‘The youngster's face lit up after pulling a cracker with the bubbly mayor - before settling down for a Christmas meal with his family.’
    • ‘The Reserve Bank Board meets today - not just to pull Christmas crackers.’
    • ‘We had matching paper napkins, crackers and tablecloth!’
    • ‘For those who are not acquainted with Christmas crackers, they're little packages in garish paper.’
    • ‘With a crack like a thousand crackers being pulled and a shower of glitter, the Spirit vanished.’
    • ‘Elvira sent this Ferdinand on a quest to identify the writer of poems in the paper crackers at a ball.’
    • ‘But then, horror of horrors, it was time to pull the crackers.’
    • ‘The children pulled crackers and we read corny jokes to each other.’
    • ‘You may also want to pull some Christmas crackers at the dinner table.’
    • ‘And after their roast turkey dinner, the gang pulled the crackers and donned the paper hats.’
    • ‘Children will be around to pull a few crackers and share the turkey.’
    • ‘Jemery Fisher, the frog, was replaced with a small plastic frog that had come out of a cracker once.’
    • ‘With festive spot prizes, crackers and balloons, it was truly a great start to the Christmas par-tying season.’
    1. 2.1 A firework that explodes with a sharp noise.
      • ‘On Christmas Eve between 7 and 8 o clock a firework and cracker display was noticed about the Town Hall.’
      • ‘ARE THE traditional types of crackers that produce ear-shattering noises, slowly losing their popularity?’
      • ‘I could imagine children leaping up and down while their parents lit up the crackers on rooftops.’
      • ‘This year will be the last Guy Fawkes day when people can let off crackers, rockets, Catherine wheels and the like.’
      • ‘Gradually, the owners should keep the pets along with them while bursting bigger crackers.’
      • ‘Every year incidence of bursting crackers on the roads is growing in the city.’
      • ‘I remember bursting crackers and really enjoying myself as soon as we won that game.’
      • ‘Boisterous crowds dispelled the darkness of night with fireworks as crackers shattered the stillness of the night.’
      • ‘Bursting crackers and shouting slogans, the party partied.’
      • ‘The SPCA has been calling for the complete ban of fireworks and crackers for some time now.’
      • ‘The Pakistanis demonstrated it by bursting crackers when we won in Lahore.’
      • ‘The bombardment by bangers, crackers and fireworks was such that there was hardly a silent minute in any town.’
      • ‘The last straw was when a flock of sparrows appeared making the noise of bursting crackers.’
      • ‘Many parents across the city only hope that the manufacturers would change its focus from sound based crackers to the light based ones in the future.’
      • ‘Some of the crackers that we light every year, have a lot in common with flares and smokescreens.’
      • ‘Police would take action against those bursting noisy crackers near hospitals, schools, courts and other silence zones.’
      • ‘Public buildings were illuminated and crackers were burst.’
      • ‘At 7: 47 there were crackers exploding everywhere.’
      • ‘We would follow up the long drive and wait for the crackers to be lit, lurking a short distance from the graveside.’
      • ‘Scared away by the noise of crackers, street dogs return to their regular haunts after nearly three days.’
  • 3A thin dry biscuit, typically eaten with cheese.

    ‘the sausage is delicious on hot toast or crackers’
    • ‘They start to cook turnips and eat graham crackers, as they wait for their mother to come home.’
    • ‘It was a good night of chatter and red wine with crackers and cheese.’
    • ‘Each would make a creamy, rich covering for your whole-grain cracker.’
    • ‘Another idea is to eat whole-grain crackers with fat-free block cheese.’
    • ‘Give your child whole-grain crackers with soups, chili, and stew.’
    • ‘He brought the wine. I organised the cheese and crackers.’
    • ‘Cheese is usually too strong; bread or dry, savoury crackers are generally preferred by professionals.’
    • ‘In fact, the peanut butter cracker I left for him is still there.’
    • ‘First of all, graham crackers are not allowed.’
    • ‘Elaine put the last animal cracker in her mouth and chewed dismally.’
    • ‘Sensible shoes, diapers and animal crackers are just the tip of the iceberg.’
    • ‘Luke humorously questions Annie as he puts a cheese cracker into his mouth.’
    • ‘There's cheese and crackers for those who still have wine left to finish.’
    • ‘He settled for a pack of cheese crackers with peanut butter inside.’
    • ‘She grabbed a few crackers and cream cheese, grabbed her backpack, and hiked upstairs to start.’
    • ‘Then I went back in to the store and bought cheese and crackers on sale.’
    • ‘With perfect wheels of cheese and crackers before me, I misted up a bit.’
    • ‘Spread smoked salmon and low-fat cream cheese on whole wheat crackers or pith rounds and top with fresh dill.’
    • ‘I ripped the package open and shoved a cracker into my mouth, whole.’
    • ‘She pulled out some more crackers and peanut butter and sat down to eat.’
    1. 3.1 A light crisp made of rice or tapioca flour.
      ‘prawn crackers’
      • ‘Seaweed is commonly eaten by the Japanese in a variety of snack foods, including tiny crisp rice crackers.’
      • ‘Yesterday I had the remains of a lemon meringue and a packet of prawn crackers.’
      • ‘We went to Kevin's place to eat some rice crackers and practice for their dance.’
      • ‘You come all this way and they didn't have any prawn crackers.’
      • ‘Prawn rice crackers and anchovy-like dried fish chips are the sails.’
      • ‘Over cups and cups of green tea and bowlfuls of rice crackers, we chat in his kitchen well into the afternoon.’
      • ‘They were learning to use the chopsticks, and everyone tried the noodles and prawn crackers.’
      • ‘Then I stared at the computer screen and ate rice crackers.’
      • ‘This neighbour boy eats sweet potato and rice crackers.’
      • ‘Quite some time back I was snacking and found the perfect rice cracker.’
      • ‘I'm currently eating BBQ rice crackers with salsa and sour cream.’
      • ‘Consequently, he's mainly a sweet potato and rice cracker kind of guy.’
      • ‘Read your ingredients carefully; even rice crackers can contain brown rice syrup.’
      • ‘But cheaper tickets and wrestlers hawking rice crackers won't be enough to rescue sumo.’
      • ‘Sora thought tiredly, as he grabbed a rice cracker from the plate filled with the low-fat snacks set nearby.’
      • ‘After school I went home with a sulk, Kirara was relaxed at the couch watching TV while eating rice crackers.’
      • ‘Japanese food markets, where you'll find low-fat savory rice crackers and low-fat roasted green peas.’
      • ‘Also, some bakeries make flats and crackers from rice and millet.’
      • ‘They threw back local smoked mussels served on crisp rice crackers with mayonnaise.’
  • 4British informal A fine example of something.

    ‘don't miss this cracker of a CD’
    • ‘It turned out, in fact, to be a cracker of a show to cheer up the punters on a showery and cold early-March night.’
    • ‘The final was a real cracker with some marvellous pitching from both sides.’
    • ‘An absolute cracker of a match is confidently expected.’
    • ‘A cracker of a game was played with both sides giving their all.’
    • ‘If you get the chance to come along I reckon you will see a cracker of a match so don't forget the date.’
    • ‘‘As free holidays go, I think they pulled off a cracker,’ sneers Braithwaite.’
    • ‘Fifteen minutes into the second half, Paul Donnelly scored a cracker to equalise.’
    • ‘Ward and John Joe Maguire were both just wide, while Damian Curran hit a cracker that Rice saved.’
    • ‘What an absolute cracker we have in store for you tonight.’
    • ‘It's a cracker of a book and you should read it if you haven't already.’
    • ‘Of course the Chelsea and Barcelona game has the promise of being an absolute cracker.’
    • ‘In the other semi-final, Bishopthorpe edged out Pickering Town on penalties after a cracker of a match.’
    • ‘Joe Cole scored a cracker of a goal, but Norwich were certainly not outclassed, except up front.’
    • ‘Titled Celtic Christmas, this second solo album from Tommy is a real cracker.’
    • ‘Oh, I have a cracker of a photo of the two of us after a massive goodbye cry, when I left Australia 10 years ago.’
    • ‘Well, we're all set for what should be an absolute cracker of a game.’
    • ‘If both play to their undoubted potential then a cracker of a game is in prospect.’
    • ‘He also scored a cracker of a goal in the first-half.’
    • ‘The singer has pulled off another cracker of an album which deserves to be heard.’
    masterpiece, sensation, marvel, wonder, triumph, winner, success, feat, coup, master stroke
    View synonyms
    1. 4.1 An attractive person, especially a woman.
      ‘you look a cracker’
      beautiful woman, belle, vision, charmer, enchantress, venus, goddess, beauty queen, english rose, picture, seductress
      View synonyms
  • 5US offensive

    another term for poor white


  • be not worth a cracker

    • informal Be of no value.

      ‘the battered old boat was not worth a cracker’
      • ‘Mum emphasized he's not worth a cracker, having never done a decent day's work in his life.’
      • ‘Remember, all this lot are just copies. Not worth a cracker!’
      • ‘My opinion is not worth a cracker when it comes to sea ice.’
      • ‘You can return your plastic, glass, or aluminium containers, though the tops aren't worth a cracker.’
      • ‘I saw these people every day when I was in local government and they are not worth a cracker.’