Quittor n. : A chronic abscess, or fistula of the coronet, in a horse's foot, resulting from inflammation of the tissues investing the coffin bone.

Example:
Can my Boyfriend get out of the Marines?

Taxonomy
infection, horse, collateral cartilages, fatal infection, cartilages, infected, lameness, draft horses, hoof wall, coronary band, wound, DVM, breeds, sidebones, poor blood supply, treads, shoes, abscess.

Defination from the web:
quittor, a. more serious complication, is now very uncommon. Quittor more commonly affects the front. rather than the hind feet and the condition was more frequently seen in the heavy (draft) breeds ...