tumbler

noun

1. a gymnast who performs rolls and somersaults and twists etc.

Definition categories: person, gymnast

2. a glass with a flat bottom but no handle or stem; originally had a round bottom

Definition categories: man–made, glass

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

Definition categories: man–made, impediment, impedimenta, obstructer, obstruction, obstructor

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

Similar word(s): roller

Definition categories: animal