drinking glass without foot or stem and originally with pointed or convex base
movable obstruction in a lock (as a lever, latch, wheel, slide, or pin) that must be adjusted to a particular position (as by a key) before the bolt can be thrown
TUMBLER, one who tumbles (to roll head over heels) [n]
device or mechanism for tumbling (as a revolving cage in which clothes are dried)
piece on which the mainspring acts in a gun's lock
TUMBLER, one that tumbles (to fall or roll end over end) [n]