n. The horny sheath covering the toes or lower part of the foot of a mammal of the orders Perissodactyla and Artiodactyla, such as a horse, ox, or deer.n. The foot of such an animal, especially a horse.n. Slang The human foot.v. To trample with the hoofs.verb-intransitive. Slang To dance, especially as a professional.verb-intransitive. Slang To go on foot; walk.idiom. hoof it Slang To walk.idiom. hoof it Slang To dance.idiom. on the hoof Not yet butchered; alive. Used especially of cattle.