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WordReference Random House Learner's Dictionary of American English © 2024cop•per1 /ˈkɑpɚ/USA pronunciation n. - Chemistry[uncountable] a metal element having a reddish brown color, used as an electrical conductor and to make alloys, as brass and bronze.
- [uncountable] a reddish brown.
- [countable] a coin of copper or bronze.
- British Terms[countable] Brit. a large kettle for cooking or for boiling laundry.
cop•per•y, adj. cop•per2 /ˈkɑpɚ/USA pronunciation n. [countable] Slang.- Slang Terms a police officer.
WordReference Random House Unabridged Dictionary of American English © 2024Amer′ican cop′per. - See under copper 1 (def. 4).
WordReference Random House Unabridged Dictionary of American English © 2024cop•per1 (kop′ər),USA pronunciation n. - Chemistrya malleable, ductile, metallic element having a characteristic reddish-brown color: used in large quantities as an electrical conductor and in the manufacture of alloys, as brass and bronze. Symbol: Cu;
at. wt.: 63.54;
at. no.: 29;
sp. gr.: 8.92 at 20°C. - a metallic reddish brown.
- a coin composed of copper, bronze, or the like, as the U.S. cent or the British penny.
- Insectsany of several butterflies of the family Lycaenidae, as Lycaena hypophleas (American copper), having copper-colored wings spotted and edged with black.
- a container made of copper.
- Buildinga tool partly or wholly made of copper:a soldering copper.
- British Termsa large kettle, now usually made of iron, used for cooking or to boil laundry.
adj. - made of copper:copper kettles.
- reddish-brown;
coppery:The copper sun sank into the sea.
v.t. - to cover, coat, or sheathe with copper.
- [Informal.]hedge (def. 6).
- Late Latin cuprum, for Latin (aes) Cyprium Cyprian (metal)
- Middle English coper, Old English coper, copor (cognate with Old Norse koparr, German Kupfer) bef. 1000
- Slang Termsa police officer.
- perh. cop1 + -er1 1840–50, American.
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