gunmetal
gun.met.al \'g*n-.met-*l\ n 1: a metal used for guns; specif : a bronze formerly much used as a material for cannon 2: an alloy or metal treated to imitate nearly black tarnished copper-alloy gunmetal
gun.met.al \'g*n-.met-*l\ n 1: a metal used for guns; specif : a bronze formerly much used as a material for cannon 2: an alloy or metal treated to imitate nearly black tarnished copper-alloy gunmetal