copper

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

a copper penny

uncomplimentary terms for a policeman

a reddish-brown color resembling the color of polished copper

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

coat with a layer of copper