coppernoun
uk/ˈkɒp.ər/us/ˈkɑː.pɚ/copper noun (METAL)
B2 [ U ] symbol Cu a chemical element that is a reddish-brown metal, used especially for making wire and coins:
copper wire/pipes
a copper alloy
[ U ] the reddish-brown colour of the metal copper:
The copper of Rosie's hair shone in the sunlight.
[ C usually plural ] UK informal a brown coin of low value:
I gave him a few coppers.
More examples
- The downward drift in copper prices looks set to continue.
- Brass is an alloy of copper and zinc.
- Chemical analysis revealed a high content of copper.
- They mine a lot of copper around these parts.
- One of the properties of copper is that it conducts heat and electricity very well.
Thesaurus: synonyms and related words
Chemical elements
- alkali metal
- antimony
- calcium
- carbonic
- carbonic acid
- cesium
- cl
- graphene
- lithium
- nickel
- plutonium
- quicksilver
- selenium
- strontium
- sulphur
- transition metal
- urea
- vanadium
- xenon
- zinc
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You can also find related words, phrases, and synonyms in the topics:
Less common colours
British money
copper noun (POLICE)
[ C ] UK informal a police officer
Thesaurus: synonyms and related words
People who work for the police service
- bobby
- cadet
- chaperone
- chief constable
- constable
- cop
- fed
- G-man
- inspector
- Mountie
- officer
- outrider
- patrolman
- police officer
- policeman
- policewoman
- prefect
- sepoy
- trooper
- WPC
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copper
adjective ukus
of the reddish-brown colour of the metal copper