Nouns

(n)copper, Cu, atomic number 29a 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
(n)coppera copper penny
(n)bull, cop, copper, fuzz, piguncomplimentary terms for a policeman
(n)copper, copper colora reddish-brown color resembling the color of polished copper
(n)copperany of various small butterflies of the family Lycaenidae having coppery wings

Verbs

(v)coppercoat with a layer of copper