[n] a grounder that rolls along the infield
[n] pigeon that executes backward somersaults in flight or on the ground
[n] Old World bird that tumbles or rolls in flight; related to kingfishers
[n] 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"
[n] a cylinder that revolves
[n] a small wheel without spokes (as on a roller skate)
[n] a long heavy sea wave as it advances towards the shore