Lizard

noun

1. Any reptile of the order Squamata that is not a snake, usually having four legs, external ear openings, movable eyelids and a long slender body and tail.
2. (chiefly in attributive use) Lizard skin, the skin of these reptiles.
3. An unctuous person.
4. A coward.
5. (rock paper scissors) A hand forming a "D" shape with the tips of the thumb and index finger touching (a handshape resembling a lizard), that beats paper and Spock and loses to rock and scissors in rock-paper-scissors-lizard-Spock.