Source : Webster's Revised Unabridged Dictionary (1913)

Tarsal \Tar"sal\, a. (Anat.)
   Of or pertaining to the tarsus (either of the foot or eye).
   -- n. A tarsal bone or cartilage; a tarsale.

   {Tarsal tetter} (Med.), an eruptive disease of the edges of
      the eyelids; a kind of bleareye.