Spear-thrower

Tool to give more leverage when throwing a spear-like projectile

A spear-thrower, spear-throwing lever, or atlatl is a tool that uses leverage to achieve greater velocity in dart or javelin throwing, and includes a bearing surface that allows the user to store energy during the throw. It may consist of a shaft with a cup or a spur at the end that supports and propels the butt of the spear. It is usually about as long as the user's arm or forearm.

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