Definition of "Copper" :

noun: any of various small butterflies of the family Lycaenidae having coppery wings

noun: a reddish-brown color resembling the color of polished copper

noun: uncomplimentary terms for a policeman

noun: a copper penny

noun: a ductile malleable reddish-brown corrosion-resistant diamagnetic metallic element; occurs in various minerals but is the only metal that occurs abundantly in large masses; used as an electrical and thermal conductor

verb: coat with a layer of copper