from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A ductile, malleable, reddish-brown metallic element that is an excellent conductor of heat and electricity and is widely used for electrical wiring, water piping, and corrosion-resistant parts, either pure or in alloys such as brass and bronze. Atomic number 29; atomic weight 63.54; melting point 1,083°C; boiling point 2,595°C; specific gravity 8.96; valence 1, 2. See Table at element.
  • n. A coin, usually of small denomination, made of copper or a copper alloy.
  • n. Chiefly British A large cooking pot made of copper or often of iron.
  • n. Any of various small butterflies of the subfamily Lycaeninae, having predominantly copper-colored wings.
  • n. A reddish brown.
  • transitive v. To coat or finish with a layer of copper.
  • transitive v. Slang To bet against, as in faro.
  • n. Slang A police officer.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. a reddish-brown, malleable, ductile metallic element with high electrical and thermal conductivity, symbol Cu, and atomic number 29.
  • n. Something made of copper.
  • n. The reddish-brown colour/color of copper.
  • n. A copper coin.
  • n. A large pot, often used for heating water or washing clothes over a fire.
  • adj. Made of copper.
  • adj. Having the reddish-brown colour/color of copper.
  • v. To sheathe or coat with copper.
  • n. A policeman.

from the GNU version of the Collaborative International Dictionary of English

  • n. A common metal of a reddish color, both ductile and malleable, and very tenacious. It is one of the best conductors of heat and electricity. Symbol Cu. Atomic weight 63.3. It is one of the most useful metals in itself, and also in its alloys, brass and bronze.
  • n. A coin made of copper; a penny, cent, or other minor coin of copper.
  • n. A vessel, especially a large boiler, made of copper.
  • n. the boilers in the galley for cooking.
  • transitive v. To cover or coat with copper; to sheathe with sheets of copper.

from The Century Dictionary and Cyclopedia

  • n. Chemical symbol, Cu; atomic weight, 63.3. A metal distinguished from all others by its peculiar red Color.
  • n. A vessel made of copper, particularly a large boiler; specifically, in the plural, the large kettles or boilers in a ship's galley for boiling food for the ship's company.
  • n. Hence plural The mouth, throat, and stomach, as the receptacle and digester of food. See hot coppers, below.
  • n. A copper coin; a penny; a cent; collectively, copper money; small change.
  • n. In faro, a check, small disk like a coin, or other convenient object, used to copper with. See copper, v., 2.
  • n. plural Copper butterflies. See butterfly.
  • n. A reel used by wire-drawers to wind wire upon.
  • Consisting of or resembling copper.
  • To cover or sheathe with sheets of copper: as, to copper a ship.
  • In faro, to place a copper (cent) or other token upon (a card), to indicate that the player wishes to bet against that card; bet against: as, to copper a card; to copper a bet.
  • To coat with copper: as, to copper type; also, to color by means of a salt of copper: as, to copper pickles, etc., in order to make them a bright-green color.
  • n. The plate of copper which contains or is intended to contain on its surface the engraved or etched design prepared for printing.
  • n. A policeman. See cop.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a reddish-brown color resembling the color of polished copper
  • n. a copper penny
  • n. any of various small butterflies of the family Lycaenidae having coppery wings
  • n. 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
  • v. coat with a layer of copper
  • n. uncomplimentary terms for a policeman


from The American Heritage® Dictionary of the English Language, 4th Edition

Middle English coper, from Old English, from Late Latin cuprum, from Latin Cyprium (aes), Cyprian (metal), from Cyprius, of Cyprus, from Greek Kuprios, from Kupros, Cyprus.
From cop2.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Middle English coper, from Old English coper, copor ("copper"), from Late Latin cuprum ("copper"), contraction of Latin (aes) Cyprium (literally "brass of Cyprus"), from Ancient Greek Κύπρος (Kupros, "Cyprus"). Cognate with Dutch koper ("copper"), German Kupfer ("copper"), Icelandic kopar ("copper").

from Wiktionary, Creative Commons Attribution/Share-Alike License

From cop (verb) ("to take, capture") +‎ -er (“agent suffix”)



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  • She said "You ain’t ugly, you can kiss me if you like"

    Go ahead and kiss her, you don’t know what you’re missing

    You said "Baby, you’re special,

    But there’s something not quite right."

    She’s a Venus in flares and you wanna split hairs!

    "Oh I am innocent, you are a rocket.

    Things were ok till you took out the copper"

    Leave me alone, and get used to the chains

    You’re a pain!

    (White collar boy, by Belle and Sebastian)

    April 27, 2009

  • Cu.

    Can be spelled with the Periodic Table of Elements symbols: CoPPEr

    December 12, 2006