copper meaning and definition

COPPER noun

Definition of copper (noun)

1. 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
   • synonyms: atomic number 29, Cu
2. a copper penny
3. uncomplimentary terms for a policeman
   • synonyms: bull, cop, fuzz, pig
4. a reddish-brown color resembling the color of polished copper
   • synonyms: copper color
5. any of various small butterflies of the family Lycaenidae having coppery wings

COPPER verb

Definition of copper (verb)

1. coat with a layer of copper