1.Definition: a glass with a flat bottom but no handle or stem; originally had a round bottom

Category: Objects

2.Definition: a gymnast who performs rolls and somersaults and twists etc.

Category: People

3.Definition: a movable obstruction in a lock that must be adjusted to a given position (as by a key) before the bolt can be thrown

Category: Objects

4.Definition: pigeon that executes backward somersaults in flight or on the ground

Related Noun(s):roller

Category: Animals