knuckle

KNUCK'LE, n. nuk'l.

1. The joint of a finger, particularly when protuberant by the closing of the fingers.

2. The knee join of a calf; as a knuckle of veal.

3. The joint of a plant. [Not used.]

KNUCK'LE, v.i. nuk'l. To yield; to submit in contest to an antagonist.