roll‧er /ˈrəʊlə $ ˈroʊlər/ noun [countable]
[Word Family: verb: roll, unroll; noun: roll, roller; adjective: rolling]

1. a piece of equipment consisting of a tube-shaped piece of wood, metal etc that rolls over and over, used for painting, crushing, making things smoother etc:
a paint roller
a garden roller ⇒ steamroller¹(1)

2. [usually plural] a tube-shaped piece of metal or wood, used for moving heavy things that have no wheels:
The boats are taken down to the sea on rollers.

3. a small plastic or metal tube used for making hair curl Synonym : curler

4. a long powerful wave:
great Atlantic rollers

[TahlilGaran] Dictionary of Contemporary English ▲