Emily Dickinson Lexicon

KNUCK'LE, n. [nuk'l; Sax. cnucl; G. knöchel; D. kneukel; W. cnuc; a joint or junction; cnuciaw, to join, to couple.]

1. The joint of a finger, particularly when protuberant by the closing of the fingers.
2. The knee joint of a calf; as, a knuckle of veal.
3. The joint of a plant. [Not used.] – Bacon.