na. | 1. One's human exterior conceals the nature of a wolf.; a brute of a man; a brute under a human mask; a fiend in human shape; a man's face but the heart of a beast; be a beast in human form; bear the semblance of an angel but have the heart of a devil; be a wolf in sheep's clothing; have the face of a human being, but the heart of a beast; with a human face and the heart of a beast |