Source : Webster's Revised Unabridged Dictionary (1913)

Unce \Unce\, n. [L. uncus hook.]
   A claw. [Obs.]

Unce \Unce\, n. [L. uncia ounce. See {Ounce} a weight.]
   An ounce; a small portion. [Obs.] ``By unces hung his
   locks.'' --Chaucer.