The Collaborative International Dictionary of English v.0.48:

Farcy \Far"cy\, n. [F. farcin; cf. L. farciminum a disease of
   horses, fr. farcire. See Farce.] (Far.)
   A contagious disease of horses, associated with painful
   ulcerating enlargements, esp. upon the head and limbs. It is
   of the same nature as glanders, and is often fatal. Called
   also farcin, and farcimen.
   [1913 Webster]

   Note: Farcy, although more common in horses, is communicable
         to other animals and to human beings.
         [1913 Webster]

   Farcy bud, a hard, prominent swelling occurring upon the
      cutaneous surface in farcy, due to the obstruction and
      inflammation of the lymphatic vessels, and followed by
      ulceration. --Youatt.
      [1913 Webster]