roller

(noun) a grounder that rolls along the infield.

(noun) a long heavy sea wave as it advances towards the shore. Synonyms: roll, rolling wave.

(noun) a small wheel without spokes (as on a roller skate).

(noun) a cylinder that revolves.

(noun) a mechanical device consisting of a cylindrical tube around which the hair is wound to curl it. Synonyms: curler, hair curler, crimper. Examples: "A woman with her head full of curlers is not a pretty sight."

(noun) Old World bird that tumbles or rolls in flight; related to kingfishers.

(noun) pigeon that executes backward somersaults in flight or on the ground. Synonyms: tumbler, tumbler pigeon.