'Clean' in the Bible

Of all clean beasts thou shalt take to thee by sevens, a male and its female; but of the beasts that are not clean two, a male and its female.

Of clean beasts, and of beasts that are not clean, and of fowl, and of everything that creeps on the ground,

And Noah built an altar to Jehovah; and took of every clean animal, and of all clean fowl, and offered up burnt-offerings on the altar.