What does "heinous" mean?

Heinous: Hateful; hatefully bad; flagrant; odious; atrocious; giving great great offense; -- applied to deeds or to character. It were most heinous and accursed sacrilege. Hooker. How heinous had the fact been, how deserving Contempt! Milton. -- Hei"nous*ly, adv. -- Hei"nous*ness, n.