Main Entry: ¹cop·per

Pronunciation: \ˈkä-pər\

Function: noun

Usage: often attributive

Etymology: Middle English coper, from Old English, from Late Latin cuprum copper, from Latin (aes) Cyprium, literally, Cyprian metal

Date: before 12th century

1 : a common reddish metallic element that is ductile and malleable and is one of the best conductors of heat and electricity — see element table
2 : a coin or token made of copper or bronze
3 chiefly British : a large boiler (as for cooking)
4 : any of a subfamily (Lycaeninae of the family Lycaenidae) of small butterflies with usually copper-colored wings