burner
n.— «He said he had had an altercation on Zion Street the previous morning with a man who had threatened him, saying, “You better keep your burner on you tonight.” “Burner” is a slang expression for a gun.» —“Man who shot at cops says he was scared” by Alex Wood Journal Inquirer (Manchester, Conn.) Dec. 11, 2004. (source: Double-Tongued Dictionary)