Noun

• S: (n) copper, Cu, atomic number 29 (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)
• S: (n) copper (a copper penny)
• S: (n) bull, cop, copper, fuzz, pig (uncomplimentary terms for a policeman)
• S: (n) copper, copper color (a reddish-brown color resembling the color of polished copper)
• S: (n) copper (any of various small butterflies of the family Lycaenidae having coppery wings)

Verb

• S: (v) copper (coat with a layer of copper)