unciform bone 名詞
  鉤骨
  Un·ci·form a.  Having the shape of a hook; being of a curved or hooked form; hooklike.
  Unciform bone Anat., a bone of the carpus at the bases of the fourth and fifth metacarpals; the hamatum.
  unciform bone
       n : the wrist bone in line with the 4th and 5th fingers [syn: hamate,
            hamate bone, os hamatum]