roller
— Noun
– English
～ a small wheel without spokes (as on a roller skate)
roller coaster
— Noun
– English
～ elevated railway in an amusement park (usually with sharp curves and steep inclines)
roller bearing
— Noun
– English
～ bearings containing small metal balls
roller
— Noun
– English
～ Old World bird that tumbles or rolls in flight; related to kingfishers
roller blind
— Noun
– English
～ a window shade that rolls up out of the way
roller
— Noun
– English
～ 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"
roller
— Noun
– English
～ a grounder that rolls along the infield
roller bit
— Noun
– English
～ a drill bit that has hardened rotating rollers
roller bandage
— Noun
– English
～ bandage consisting of a strip of sterile fabric (of variable width) rolled into a cylinder to facilitate application
roller coaster
— Noun
– English
～ anything characterized by abrupt and extreme changes (especially up and down); "the economy has been on a roller coaster all year"
roller
— Noun
– English
～ a cylinder that revolves
roller
— Noun
– English
～ a long heavy sea wave as it advances towards the shore
roller
— Noun
– English
～ pigeon that executes backward somersaults in flight or on the ground