Source : Webster's Revised Unabridged Dictionary (1913)

Metacarpal \Met`a*car"pal\, a. (Anat.)
   Of or pertaining to the metacarpus. -- n. A metacarpal bone.

Source : WordNet®

metacarpal
     adj : of or relating to the metacarpus; "metacarpal bones"

metacarpal
     n : any bone of the hand between the wrist and fingers [syn: {metacarpal
         bone}]