a cylinder that rotates about a central axis and is used in various machines and devices to move, flatten, or spread something

the sheets moved through rollers and down the folding machine

use a roller to resettle turf laid during autumn and winter

a long swelling wave that appears to roll steadily towards the shore

the Atlantic rollers

relating to or involving roller skates

roller hockey

a brightly coloured crow-sized bird with predominantly blue plumage, having a characteristic tumbling display flight

a bird of a breed of tumbler pigeon

a breed of canary with a trilling song

a car made by Rolls-Royce