tumbler : Idioms & Phrases
lever tumbler
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noun a flat metal tumbler in a lever lock
lever.
WordNet
pin tumbler
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noun cylindrical tumblers consisting of two parts that are held in place by springs; when they are aligned with a key the bolt can be thrown
pin.
WordNet
tumbler pigeon
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noun pigeon that executes backward somersaults in flight or on the ground
tumbler; roller.