Dictionary & Thesaurus

tumbler

1.	(noun) a glass with a flat bottom but no handle or stem; originally had a round bottom
	Related Words: drinking glass, glass

2.	(noun) a movable obstruction in a lock that must be adjusted to given position (as by a key) before the bolt can be thrown
	Related Words: impediment, impedimenta, lever, lever tumbler, obstruction, pin

3.	(noun) a gymnast who performs rolls and somersaults and twists etc.
	Related Words: gymnast, turner

4.	(noun) pigeon that executes backward somersaults in flight or on the ground
	Synonyms: roller, tumbler pigeon
	Related Words: domestic pigeon