There are 2 definitions of roller in English:

roller1

Syllabification: roll·er
Pronunciation: /ˈrōlər
 
/

noun

1A cylinder that rotates around a central axis and is used in various machines and devices to move, flatten, or spread something.
More example sentences
  • This resistance could be reduced if the fixed shafts of the rollers were rotated as they moved.
  • Product is palletized and moved over rollers and stored in one of the facility's freezers at - 18 degrees F.
  • Its two moving and two fixed feed rollers are hydraulically serial connected, and six delimbing knives ensure high quality logs.
1.1An absorbent revolving cylinder attached to a handle, used to apply paint.
More example sentences
  • 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.
  • Big sheets of paper cover the patio, and kid-safe paint, rollers, brushes, and stamps are everywhere.
  • Most painting projects require more than paint, brushes or rollers.
1.2A small cylinder on which hair is rolled in order to produce curls.
More example sentences
  • After using the curling iron or rollers, allow your hair to completely cool.
  • Curl with either rollers or curling iron, remove ponytail and brush out.
  • 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.
1.3 (also roller bandage) A long surgical bandage rolled up for convenient application.
More example sentences
  • He remained silent as Grace added the gauze and roller bandage.
1.4A long swelling wave that appears to roll steadily toward the shore.
More example sentences
  • The Pacific, he told her, being deeper, produced groundswells that made those of the Atlantic appear like rollers on a lake.
1.5 [as modifier] Of, relating to, or involving roller skates: roller hockey
More example sentences
  • And soon they were playing roller hockey in the basement.
  • I'm told the kids really go for roller disco these days.
  • But was there something deeper to roller disco than the novelty of dancing on skates?
2A brightly colored crow-sized bird with predominantly blue plumage, having a characteristic tumbling display flight.
[ late 17th century: from German Roller, from rollen 'to roll']
  • Genera Coracias and Eurystomus, family Coraciidae: several species, especially the widespread European roller (C. garrulus)
More example sentences
  • The delta, for example, has 325 species of birds - including spoonbills, European rollers and pelicans - and 160 of fish.
  • When this bird flies it's called a lilac-breasted roller because it rolls in the sky.
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.

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Word of the day hubris
Pronunciation: ˈhjuːbrɪs
noun
excessive pride or self-confidence

There are 2 definitions of roller in English:

roller2

Line breaks: roll¦er
Pronunciation: /ˈrəʊlə/

Entry from British & World English dictionary

noun

British informal
A car made by Rolls-Royce.

Definition of roller in: