berdache UK /bəˈdæʃ/US /bɚˈdæʃ/ noun1 •(offensive, old-fashioned) Among Native Americans, a person who identifies with any of a variety of gender identities which are not exclusively those of their biological sex; a transgender person.Male berdache have been documented in nearly 150 North American societies, while female berdache (females who take on the lifeways of males) appear in half as many groups. — 2005 formsberdaches