Boyd’s Bible Dictionary:
A word which, with clean, was applied to personal and ceremonial conditions, as well as to the edibility of animals
The division of animals into clean and unclean existed before the Flood (Gen. 7:22Of every clean beast thou shalt take to thee by sevens, the male and his female: and of beasts that are not clean by two, the male and his female. (Genesis 7:2)). Uncleanness and the processes of purification are particularly described (Lev. 11-15; Num. 19). Unclean animals are specially mentioned (Lev. 11:9-319These shall ye eat of all that are in the waters: whatsoever hath fins and scales in the waters, in the seas, and in the rivers, them shall ye eat. 10And all that have not fins and scales in the seas, and in the rivers, of all that move in the waters, and of any living thing which is in the waters, they shall be an abomination unto you: 11They shall be even an abomination unto you; ye shall not eat of their flesh, but ye shall have their carcases in abomination. 12Whatsoever hath no fins nor scales in the waters, that shall be an abomination unto you. 13And these are they which ye shall have in abomination among the fowls; they shall not be eaten, they are an abomination: the eagle, and the ossifrage, and the ospray, 14And the vulture, and the kite after his kind; 15Every raven after his kind; 16And the owl, and the night hawk, and the cuckow, and the hawk after his kind, 17And the little owl, and the cormorant, and the great owl, 18And the swan, and the pelican, and the gier eagle, 19And the stork, the heron after her kind, and the lapwing, and the bat. 20All fowls that creep, going upon all four, shall be an abomination unto you. 21Yet these may ye eat of every flying creeping thing that goeth upon all four, which have legs above their feet, to leap withal upon the earth; 22Even these of them ye may eat; the locust after his kind, and the bald locust after his kind, and the beetle after his kind, and the grasshopper after his kind. 23But all other flying creeping things, which have four feet, shall be an abomination unto you. 24And for these ye shall be unclean: whosoever toucheth the carcase of them shall be unclean until the even. 25And whosoever beareth ought of the carcase of them shall wash his clothes, and be unclean until the even. 26The carcases of every beast which divideth the hoof, and is not clovenfooted, nor cheweth the cud, are unclean unto you: every one that toucheth them shall be unclean. 27And whatsoever goeth upon his paws, among all manner of beasts that go on all four, those are unclean unto you: whoso toucheth their carcase shall be unclean until the even. 28And he that beareth the carcase of them shall wash his clothes, and be unclean until the even: they are unclean unto you. 29These also shall be unclean unto you among the creeping things that creep upon the earth; the weasel, and the mouse, and the tortoise after his kind, 30And the ferret, and the chameleon, and the lizard, and the snail, and the mole. 31These are unclean to you among all that creep: whosoever doth touch them, when they be dead, shall be unclean until the even. (Leviticus 11:9‑31); Deut. 14:3-203Thou shalt not eat any abominable thing. 4These are the beasts which ye shall eat: the ox, the sheep, and the goat, 5The hart, and the roebuck, and the fallow deer, and the wild goat, and the pygarg, and the wild ox, and the chamois. 6And every beast that parteth the hoof, and cleaveth the cleft into two claws, and cheweth the cud among the beasts, that ye shall eat. 7Nevertheless these ye shall not eat of them that chew the cud, or of them that divide the cloven hoof; as the camel, and the hare, and the coney: for they chew the cud, but divide not the hoof; therefore they are unclean unto you. 8And the swine, because it divideth the hoof, yet cheweth not the cud, it is unclean unto you: ye shall not eat of their flesh, nor touch their dead carcase. 9These ye shall eat of all that are in the waters: all that have fins and scales shall ye eat: 10And whatsoever hath not fins and scales ye may not eat; it is unclean unto you. 11Of all clean birds ye shall eat. 12But these are they of which ye shall not eat: the eagle, and the ossifrage, and the ospray, 13And the glede, and the kite, and the vulture after his kind, 14And every raven after his kind, 15And the owl, and the night hawk, and the cuckow, and the hawk after his kind, 16The little owl, and the great owl, and the swan, 17And the pelican, and the gier eagle, and the cormorant, 18And the stork, and the heron after her kind, and the lapwing, and the bat. 19And every creeping thing that flieth is unclean unto you: they shall not be eaten. 20But of all clean fowls ye may eat. (Deuteronomy 14:3‑20)).
Concise Bible Dictionary:
See ANIMALS