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]