What is "farcy bud"

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.

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

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.