Stinger

A stinger or sting is a sharp organ found in various animals (typically arthropods) that delivers venom (usually piercing the skin of another animal). A true sting differs from other piercing structures in that it pierces by its own action and injects venom, as opposed to teeth, which pierce by the force of opposing jaws. Stinging hairs which actively inject venom on plants such as nettles are also known as stings, but not stingers.