what is a tumbler
Here are all the possible meanings and translations of the word tumbler. Princeton's WordNet(0.00 / 0 votes)Rate this definition: tumbler(noun) a gymnast who performs rolls and somersaults and twists etc. tumbler(noun) a glass with a flat bottom but no handle or stem; originally had a round bottom. tumbler(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.