Main entry: copper
Definition: any of various small butterflies of the family Lycaenidae having coppery wings
Main entry: copper, copper color
Definition: a reddish-brown color resembling the color of polished copper
Main entry: bull, cop, copper, pig, fuzz
Definition: uncomplimentary terms for a policeman
Main entry: copper
Definition: a copper penny
Main entry: Cu, copper, atomic number 29
Definition: 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
Main entry: copper
Definition: coat with a layer of copper