Ergot.—The horny spur located at the back of the fetlock joint. The ergot is considered a vestige of an additional hoof of the prehistoric horse.
Ewe-Neck.—Low crest with head held in straight line and marked depression in front of withers.
Falls Out of Bed.—Pulls back on halter rope.
Feet Sore from the Planks.—Has chorea; a shiverer.
Family Broke.—Takes the whole family to drive him.
Feather in Eye.—Scar on eyeball, due to cut; it does not necessarily impair vision.
Filled Hocks.—Swelling of joints, indicating poor circulation, grossness. As a market term, it may mean bog-spavin and thoroughpin.
Fistula.—Fistulous withers. An abscess with opening discharging pus from sinuses (pipes) connecting with diseased tissues of the withers.
Fitty.—Has fits when hot.
Flat-Footed.—Low heels, dropped sole; founder.