There are 2 main definitions of copper in English:

copper1

Syllabification: cop·per
Pronunciation: /ˈkäpər
 
/

noun

1A red-brown metal, the chemical element of atomic number 29. (Symbol: Cu)

Copper was the earliest metal to be used by humans, first by itself and then later alloyed with tin to form bronze. A ductile, easily worked metal, it is a very good conductor of heat and electricity and is used especially for electrical wiring

More example sentences
  • In addition, fruit juices are rich in essential minerals like iron, copper, potassium, sodium, iodine and magnesium.
  • Silver fillings are actually made of a combination of metals including silver, tin, copper and mercury.
  • Men usually work with metals such as copper, brass, and aluminum to craft decorative plates, wall hangings, and utensils.
2 dated A copper coin, especially a penny: you could hire a raft for a few coppers
More example sentences
  • She stopped by a fruit stand and got two apples for three copper pieces.
3A reddish-brown color like that of copper.
More example sentences
  • In other colourful news, I've just had some reddish / copper lowlights put in my hair.
  • There weren't many people in my school with copper coloured hair.
  • Looking closely, there's a hint of copper colouring in the larger scratch.
4 [with modifier] A small butterfly of North America and Eurasia. The upper surface of its wings is typically bright reddish-orange or purple.

verb

[with object] Back to top  
Cover or coat (something) with copper.
More example sentences
  • Drake watched it from atop the watchman's truck, against the pole that held the beat-up and coppered bell.
  • Everything was made of gold, coppered from age.

Origin

Old English copor, coper (related to Dutch koper and German Kupfer), based on late Latin cuprum, from Latin cyprium aes 'Cyprus metal' (so named because Cyprus was the chief source).

Definition of copper in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

There are 2 main definitions of copper in English:

copper2

Syllabification: cop·per
Pronunciation: /ˈkäpər
 
/

noun

informal
A police officer.
More example sentences
  • How do you know the coppers won't know you weren't there?
  • Unless perhaps you were a copper going undercover.
  • Since Monday I have been counting the number of coppers, cop cars, dog handling units, malicious arrests and good-humoured stop-and-searches I've spotted in Hackney.

Origin

mid 19th century: from cop1 + -er1.

Definition of copper in: