a person who performs leaps, somersaults, and other bodily feats.

(in a lock) any locking or checking part that, when lifted or released by the action of a key or the like, allows the bolt to move.

a stemless drinking glass having a flat, often thick bottom.

(in a gunlock) a leverlike piece that by the action of a spring forces the hammer forward when released by the trigger.

Machinery .

a part moving a gear into place in a selective transmission.

a single cog or cam on a rotating shaft, transmitting motion to a part with which it engages.

a tumbling box or barrel.

a person who operates a tumbling box or barrel.

one of a breed of dogs resembling a small greyhound, used formerly in hunting rabbits.

Also called roller. one of a breed of domestic pigeons noted for the habit of tumbling backward in flight.

a toy, usually representing a fat, squatting figure, that is weighted and rounded at the bottom so as to rock when touched.

a tumbrel or tumble cart.