1. An act of deception or fraud; that which is the means of fraud or deception; a fraud; a trick; imposition; imposture. When I consider life, 'tis all a cheat. Dryden. 2. One who cheats or deceives; an impostor; a deceiver; a cheater. Airy wonders, which cheats interpret. Johnson 3. (Bot.) A troublesome grass, growing as a weed in grain fields; -- ...