tumblers

1. a gymnast who performs rolls and somersaults and twists etc.Synonyms: tumbler

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

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

4. pigeon that executes backward somersaults in flight or on the groundSynonyms: roller, tumbler, tumbler pigeon