Slingshot

A slingshot, shanghai, flip, bean shooter, or catapult (primarily British English) is a small hand-powered projectile weapon. The term Wrist-Rocket, sometimes used generically to describe any slingshot, is a registered trademark of Saunders Archery. The classic form consists of a Y-shaped frame held in the off hand, with two rubber strips attached to the uprights. The other ends of the strips lead back to a pocket which holds the projectile. The pocket is grasped by the dominant hand and drawn back to the desired extent to provide power for the projectile (up to a full span of the arms with sufficiently long bands).