stinger

:  a sharp part of an animal (as a bee or scorpion) that is used to wound and often poison prey or an enemy

1:  a sharp organ (as of a wasp, bee, scorpion, or stingray) that is usually connected with a poison gland or otherwise adapted to wound by piercing and injecting a poison

2:  a usually sports-related injury of the brachial plexus marked by a painful burning sensation that radiates from the neck down the arm and is often accompanied by weakness or numbness of the affected area—called also burner