ROLLER

n. person or thing that rolls; heavy cylindrical tool used to flatten or compress (i.e. steamroller); large sea wave; cylindrical object around which a material is wrapped (i.e. hair roller)

The Rollers are an Old World family of near passerine birds. They resemble crows in size and build, but are more closely related to the kingfishers and bee-eaters. They share the colourful appearance of those groups, blues and browns predominating. The two inner front toes are connected, but not the outer one.
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Noun
1. a grounder that rolls along the infield
(hypernym) grounder, ground ball, groundball, hopper
2. a long heavy sea wave as it advances towards the shore
(synonym) roll, rolling wave
(hypernym) wave, moving ridge
(derivation) roll, undulate, flap, wave
3. a small wheel without spokes (as on a roller skate)
(hypernym) wheel
(hyponym) caster, castor
(part-holonym) roller skate
(derivation) roll, turn over
4. a cylinder that revolves
(hypernym) cylinder
(hyponym) garden roller
(part-holonym) roller blind
(derivation) roll, turn over
5. a mechanical device consisting of a cylindrical tube around which the hair is wound to curl it; "a woman with her head full of curlers is not a pretty sight"
(synonym) curler, hair curler, crimper
(hypernym) mechanical device
(derivation) wind, wrap, roll, twine
6. Old World bird that tumbles or rolls in flight; related to kingfishers
(hypernym) coraciiform bird
(hyponym) European roller, Coracias garrulus
(member-holonym) Coraciidae, family Coraciidae
7. pigeon that executes backward somersaults in flight or on the ground
(synonym) tumbler, tumbler pigeon
(hypernym) domestic pigeon

n. scooter, two-wheeled motor vehicle similar to a motorcycle; two-wheeled children's vehicle resembling a skateboard with a handlebar; breaker, roller, large wave, wave that breaks into foam

n. roller