TUMBLER

Definition of TUMBLER

  1. (noun)a gymnast who performs rolls and somersaults and twists etc.
  2. (noun)a glass with a flat bottom but no handle or stem; originally had a round bottom
  3. (noun)a movable obstruction in a lock that must be adjusted to a given position (as by a key) before the bolt can be thrown
  4. (noun)pigeon that executes backward somersaults in flight or on the ground