Main Entry:

tum·bler

Pronunciation:

\ˈtəm-blər\

Function:

noun

Date:

14th century

1: one that tumbles: as a: one who performs tumbling feats : acrobat b: any of various domestic pigeons that tumble or somersault backward in flight or on the ground 2: a drinking glass without foot or stem and originally with pointed or convex base3 a: a 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 b: a piece on which the mainspring acts in a gun's lock4: a device or mechanism for tumbling (as a revolving cage in which clothes are dried)5: a worker who operates a tumbler

— tum·bler·ful \-ˌfu̇l\ noun