Definition of roller in English:



  • 1A cylinder that rotates around a central axis and is used in various machines and devices to move, flatten, or spread something.

    • ‘A thumb switch near the right handlebar engages the motor to press a roller on the motor shaft, which helps spin the tire.’
    • ‘The lower part of the table is on rollers and when unlocked is moved out of the way.’
    • ‘Batch after batch failed; but finally they developed a process in which whole wheat was cooked, allowed to stand for several hours and passed through plain rollers, which flattened each grain into a flake.’
    • ‘The suspended cam design also allows the feed rollers to adjust their angle of attack according to tree size, so that a wide range of tree sizes end up in the same position in the head every time.’
    • ‘A bit farther on, glowing one-ton ingots of steel thunder down rollers to be pressed into thin sheets.’
    • ‘The crushing mechanism is made up of three shafts with three rollers mounted on each.’
    • ‘The 1-piece rollers are chosen because they are cheaper since they are machined out of a single piece of metal.’
    • ‘The first plate is prepared, ink is spread on the rollers, paper is laid on the press bed and the machine rolls into action.’
    • ‘Product is palletized and moved over rollers and stored in one of the facility's freezers at - 18 degrees F.’
    • ‘Mounting wall maps on linen with rollers meant that they could be easily moved from one location to another.’
    • ‘This resistance could be reduced if the fixed shafts of the rollers were rotated as they moved.’
    • ‘Bed rollers close to the blade reduced the friction of timbers on the machined cast iron table.’
    • ‘My life seemed as fixable as a thin, glass vase which is conveniently dropped at a height of a hundred meters over a concrete area, stamped on and then flattened by a couple of rollers.’
    • ‘Its two moving and two fixed feed rollers are hydraulically serial connected, and six delimbing knives ensure high quality logs.’
    • ‘The front-mounted roller is designed with unsharpened blades welded to a hollow cylinder drum that can be filled with water for additional weight.’
    • ‘Sparks fly and steam rises when the bars hit rollers that squeeze the metal into I-beams and rails.’
    • ‘To aid the process of working the butter, they produced this press with which lumps of butter were squeezed between the two quarter cylinder rollers to press out the buttermilk.’
    • ‘Someone might have oiled the rollers and idler pulley with too much oil or have gotten oil in some place it is not supposed to be.’
    • ‘Later refinements included calendered surfaces produced by passing sheets through rollers.’
    • ‘You put a box in here, the apples run up a roller and this machine only sorts, it doesn't wash.’
    1. 1.1An absorbent revolving cylinder attached to a handle, used to apply paint.
      • ‘We use spray or rollers to get the paint on the wall, but we finish it with paintbrushes.’
      • ‘After sealing each gallon, he started to gather up the brushes and rollers, occasionally stepping in a puddle of paint.’
      • ‘As she did, paint from the roller splattered all over him.’
      • ‘Cheap rollers, pads, and brushes can cause a poor application.’
      • ‘Water-based paint washes off rollers with lukewarm soapy water, but it's advisable to buy a few roller sleeves if you are using a number of colours.’
      • ‘It can be applied using standard brushes, rollers or spray equipment, but to minimize the streaks and get the best color coverage, you'll probably find that foam brushes or spray equipment work best.’
      • ‘Using a roller and black enamel paint, the stencil was applied 250 times on each of a hundred 48-inch-square canvases.’
      • ‘The artist uses masking tape and cardboard to construct a mold on a ground that has been prepared with clear medium applied with a roller.’
      • ‘With rollers, purchase a handle with nylon bearings, a comfortable grip, a threaded hole for an extension, and a beveled end.’
      • ‘Generally you can achieve very similar results with a paint pad or a short-nap roller.’
      • ‘Beyond traditional brushes and rollers, there is a whole range of convenience painting tools.’
      • ‘During the final phases, he uses a roller to apply paint to the highest points of the surface and then uses small brushes to add highlights.’
      • ‘It quickly and effectively removes all types of latex-based paint from painting equipment such as brushes, rollers and spray tips.’
      • ‘Applying orange paint with a small roller, he wove a continuous, scribblelike band of color throughout the 25-foot-high space.’
      • ‘Big sheets of paper cover the patio, and kid-safe paint, rollers, brushes, and stamps are everywhere.’
      • ‘I've managed to spend some of our money on the material needed to redo the downstairs: Paint, wallpaper, tarps, brushes, and rollers.’
      • ‘Most painting projects require more than paint, brushes or rollers.’
      • ‘The sealer can usually be applied using a brush, roller or spray.’
      • ‘Using a standard roller cover and paint tray apply the glaze to the wall starting at the ceiling and working your way down.’
      • ‘In contrast, western woodblock processes typically use oil-based inks applied by a roller onto the block.’
    2. 1.2A small cylinder on which hair is rolled in order to produce curls.
      • ‘Another thing to remember is that synthetic wigs cannot be styled with curling irons, hot rollers or blow dryers.’
      • ‘Her brown hair was in rollers and she was also still in her nightgown.’
      • ‘Her hair was in rollers and she had an avocado green clay mask on that was pulling her skin uncomfortably tight.’
      • ‘Curl with either rollers or curling iron, remove ponytail and brush out.’
      • ‘Around your face, the rollers should be curled down toward your ears.’
      • ‘He also put my hair up in hot rollers, hair-sprayed the heck out of it, and when he was done, it was amazing: My hair was so big, I could be the envy of any mall rat!’
      • ‘For those who love soft, easy tresses, using rollers instead of a curling iron to add texture is one of the most restful options around.’
      • ‘Her hair was set in rollers, and her feet were snug in light green slippers.’
      • ‘After using the curling iron or rollers, allow your hair to completely cool.’
      • ‘I take my hair out of the rollers and spritz it with shine spray.’
      • ‘Whether using hot rollers or a blow dryer, apply hair spray after hair has cooled to maximize the style.’
      • ‘The only other patron is a middle-aged lady who's sitting on one of the barber chairs, her hair in permanent rollers while she flips through a magazine.’
      • ‘After setting the hair on large rollers and drying it under a hooded dryer, he says she ran her fingers through it to loosen the curls and create softness.’
      • ‘Watch how your hair is styled, what products are used, what kind of brushes, rollers, or styling irons your hairdresser uses so that you can replicate the look yourself.’
      • ‘The group stood frozen while a green faced blonde hair girl with rollers in her hair stood at the top stair.’
      • ‘Mariah grabbed the phone in a rush, cradling it between her ear and shoulder while putting a roller in her hair.’
      • ‘It's always this image with a landlady and landlord, with rollers in their hair.’
      • ‘I started applying light, silver shadows while the hair rollers heated up.’
      • ‘Velcro rollers on damp hair afford the best no-fuss volume.’
      • ‘She was still in bed, pink plastic rollers in her hair, reading a beauty magazine.’
    3. 1.3A long surgical bandage rolled up for convenient application.
      • ‘He remained silent as Grace added the gauze and roller bandage.’
    4. 1.4A long swelling wave that appears to roll steadily toward the shore.
      • ‘The Pacific, he told her, being deeper, produced groundswells that made those of the Atlantic appear like rollers on a lake.’
      wave, breaker, roller, comber, billow
      View synonyms
    5. 1.5[as modifier]Relating to or involving roller skates.
      ‘roller hockey’
      • ‘The arenas are a frozen pond, a municipal rink, and even a street court for roller hockey.’
      • ‘Standing by are five sports that have been proposed as replacements - golf, sevens rugby, karate, roller sports and squash.’
      • ‘Founded in 1945, Riedell manufactures a complete line of skates, including figure, hockey, speed, roller and in-line skates.’
      • ‘Engineers unwind by playing roller hockey in the downstairs garage or racing remote-control blimps through the offices.’
      • ‘But was there something deeper to roller disco than the novelty of dancing on skates?’
      • ‘The International Olympic Committee has decided not to add any sports to the schedule for the summer games, much to the disappointment of squash, rugby, karate, roller sports and golf.’
      • ‘I'm told the kids really go for roller disco these days.’
      • ‘Part of me wanted to apologize to the man I had bumped into, but another part of me knew that I couldn't back down now if I wanted to become king of the roller disco.’
      • ‘If you're going to ask someone out, ask him out for a drink, not pickup roller hockey.’
      • ‘Residents love their bikes; indoor roller hockey approaches a religious level; and even outdoor winter in-line skating has a cult following.’
      • ‘And soon they were playing roller hockey in the basement.’
  • 2A brightly colored crow-sized bird with predominantly blue plumage, having a characteristic tumbling display flight.

    • ‘When this bird flies it's called a lilac-breasted roller because it rolls in the sky.’
    • ‘The delta, for example, has 325 species of birds - including spoonbills, European rollers and pelicans - and 160 of fish.’
  • 3A bird of a breed of tumbler pigeon.

  • 4A bird of a breed of canary with a trilling song.

  • 5A broad surcingle, typically padded at the withers.