lever tumbler

English Thesaurus

1. a flat metal tumbler in a lever lock (noun.artifact)

hypernym	:	tumbler,
definition	:	a movable obstruction in a lock that must be adjusted to a given position (as by a key) before the bolt can be thrown (noun.artifact)

part meronym	:	lever lock,
definition	:	a lock whose tumblers are levers that must be raised to a given position so that the bolt can move (noun.artifact)