Leviticus 20:21

Except in the case allowed by God, Deuteronomy 25:5. An unclean thing; an abominable thing, like the uncleanness of a menstruous woman, which is oft expressed by this word: Heb. a separation or removing, i.e. a thing deserving separation or exclusion from society with others; or a thing to be removed out of sight or out of the world.