King James Bible Dictionary

A cleft hoof as of neat cattle (Exodus 10:26; Ezekiel 32:13); hence also of the horse, though not cloven (Isaiah 5:28). The "parting of the hoof" is one of the distinctions between clean and unclean animals (Leviticus 11:3; Deuteronomy 14:7).

Parting of, one of the physical marks used for distinguishing clean and unclean animals.
Leviticus 11:3-8; Deuteronomy 14:3-8

HOOF, noun

1. The horny substance that covers or terminates the feet of certain animals, as horses, oxen, sheep, goats, deer, etc.

2. An animal; a beast.

He had not a single hoof of any kind to slaughter.

HOOF, verb intransitive To walk, as cattle. [Little used.]

HOOF'-BOUND, adjective A horse is said to be hoof-bound when he has a pain in the fore-feet, occasioned by the dryness and contraction of the horn of the quarters, which straightens the quarters of the heels, and often makes him lame.

HOOF'ED, adjective Furnished with of hoofs.

Of all the hoofed quadrupeds, the horse is the most beautiful.