Knab"ble (?), v. i. [Freq. of knab.] To bite or nibble. [Obs.]

Horses will knabble at walls, and rats gnaw iron.

Sir T. Browne.

Knack (nk), v. i. [Prob. of imitative origin; cf. G. knacken to break,

Dan. knage to crack, and E. knock.] 1. To crack; to make a sharp,

abrupt noise to chink. [Obs. or Prov. Eng.] Bp. Hall.