The Collaborative International Dictionary of English v.0.48:

Carpal \Car"pal\, a. [From Carpus.] (Anat.)
   Of or pertaining to the carpus, or wrist. -- n. One of the
   bones or cartilages of the carpus; a carpale.
   [1913 Webster]

   Carpal angle (Zool.), the angle at the last joint of the
      folded wing of a bird.
      [1913 Webster]

WordNet (r) 3.0 (2006):

carpal
    adj 1: of or relating to the wrist; "Carpal tunnel syndrome"
    n 1: any of the eight small bones of the wrist of primates [syn:
         carpal bone, carpal, wrist bone]