<p><strong>noun</strong></p><ul><li>A broad, flat limb, as of a seal or whale, especially adapted for swimming.</li><li>Also called fin.</li><li>One of a pair of paddle-like devices, usually of rubber, worn on the feet as an aid in scuba diving and swimming.</li><li>Theater: a narrow flat hinged or attached at right angles to a larger flat.</li><li>Slang: the hand.</li><li>Someone or something that flips.</li></ul>