The Collaborative International Dictionary of English v.0.48:

Hamate \Ha"mate\ (h[=a]"m[asl]t), a. [L. hamatus, fr. hamus
   hook.]
   Hooked; bent at the end into a hook; hamous.
   [1913 Webster]

WordNet (r) 3.0 (2006):

hamate
    n 1: the wrist bone in line with the 4th and 5th fingers [syn:
         hamate, hamate bone, unciform bone, os hamatum]