Copper, n. [OE. coper (cf. D. koper, Sw. koppar, Dan. kobber, G. kupfer), LL. cuper, fr. L. cuprum for earlier Cyprium, Cyprium aes, i.e., Cyprian brass, fr. Gr. of Cyprus (Gr. ), anciently renowned for its copper mines. Cf. Cypreous.].

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. [1913 Webster]
" Copper is the only metal which occurs native abundantly in large masses; it is found also in various ores, of which the most important are chalcopyrite, chalcocite, cuprite, and malachite. Copper mixed with tin forms bell metal; with a smaller proportion, bronze; and with zinc, it forms brass, pinchbeck, and other alloys." [1913 Webster]
A coin made of copper; a penny, cent, or other minor coin of copper. [1913 Webster]
"My friends filled my pockets with coppers." [1913 Webster]
A vessel, especially a large boiler, made of copper. [1913 Webster]
the boilers in the galley for cooking; as, a ship's coppers. [1913 Webster]
" Copper is often used adjectively, commonly in the sense of made or consisting of copper, or resembling copper; as, a copper boiler, tube, etc." [1913 Webster]

"It is sometimes written in combination; as, copperplate, coppersmith, copper-colored." [1913 Webster]

"All in a hot and copper sky." [1913 Webster]

Copper finch. (Zoöl.) See Chaffinch. -- Copper glance, or Vitreous copper. (Min.) See Chalcocite. -- Indigo copper. (Min.) See Covelline.

Copper, v. t.

To cover or coat with copper; to sheathe with sheets of copper; as, to copper a ship. [1913 Webster]

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OXFORD DICTIONARY

Copper, n., adj., & v.
--n.
1 Chem. a malleable red-brown metallic element of the transition series occurring naturally esp. in cuprite and malachite, and used esp. for electrical cables and apparatus.

Idiom

copper beech a variety of beech with copper-coloured leaves. copper belt a copper-mining area of Central Africa. copper-bit a soldering tool pointed with copper. copper-bottomed
1 having a bottom sheathed with copper (esp. of a ship or pan).
2 genuine or reliable (esp. financially). copper pyrites a double sulphide of copper and iron: also called CHALCOPYRITE. copper sulphate a blue crystalline solid used in electroplating, textile dyeing, etc. copper vitriol copper sulphate.

Usage

Symb.: Cu.
2 a bronze coin.
3 a large metal vessel for boiling esp. laundry.
4 any of various butterflies with copper-coloured wings.
--adj. made of or coloured like copper.
--v.tr. cover (a ship's bottom, a pan, etc.) with copper.

Copper, n. Brit. sl. a policeman.

Etymology

COP(1) + ER(1)

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THESAURUS

Copper

C, C-note, Dogberry, G, G-note, John Law, Titian, adust, auburn, aureate, bar, bay, bay-colored, bayard, bluecoat, bobby, brass, brassy, brazen, bronze, bronze-colored, bronzed, bronzy, brownish-red, buck, bull, bullion, cartwheel, castaneous, cent, century, chestnut, chestnut-brown, coin gold, coin silver, cop, copper-colored, coppery, cupreous, cuprous, dick, dime, dollar, dollar bill, ferrous, ferruginous, fifty cents, fin, fish, five cents, five hundred dollars, five-dollar bill, five-hundred-dollar bill, five-spot, fiver, flatfoot, flattie, four bits, foxy, frogskin, fuzz, gendarme, gilt, gold, gold nugget, gold-filled, gold-plated, golden, grand, gumshoe, half G, half a C, half dollar, half grand, heat, henna, hundred-dollar bill, ingot, iron, iron man, ironlike, lead, leaden, liver-brown, liver-colored, livid-brown, mahogany, man, mercurial, mercurous, mill, nickel, nickelic, nickeline, nugget, officer, peeler, penny, pewter, pewtery, pig, precious metals, quarter, quicksilver, red cent, reddish-brown, roan, rubiginous, rufous, russet, russety, rust, rust-colored, rusty, sawbuck, shamus, silver, silver dollar, silver-plated, silvery, skin, smacker, steel, steely, sunburned, ten cents, ten-spot, tenner, terra-cotta, the cops, the fuzz, the law, thousand dollars, thousand-dollar bill, tin, tinny, twenty-dollar bill, twenty-five cents, two bits, two-dollar bill, two-spot, yard, yellow stuff

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ROGET THESAURUS

Copper

Money

N money, legal tender, money matters, money market, finance, accounts, funds, treasure, capital, stock, assets, wealth, supplies, ways and means, wherewithal, sinews of war, almighty dollar, needful, cash, mammon, dough, cabbage, money-like instruments, M, M, sum, amount, balance, balance sheet, sum total, proceeds, currency, circulating medium, specie, coin, piece, hard cash, cold cash, dollar, sterling coin, pounds shillings and pence, Ls, d, pocket, breeches pocket, purse, money in hand, cash at hand, ready money, ready cash, slug, wad wad of bills, wad of money, thick wad of bills, roll of dough, rhino, blunt, dust, mopus, tin, salt, chink, argent comptant, bottom dollar, buzzard dollar, checks, dibs, double eagle, eagle, Federal currency, fractional currency, postal currency, Federal Reserve Note, United States Note, silver certificate, gold certificate, long bit, short bit, moss, nickel, pile, pin money, quarter, red cent, roanoke, rock, seawan, seawant, thousand dollars, grand, single, one-dollar bill, two- dollar bill, five-dollar bill, fiver, fin, Lincoln, ten-dollar bill, sawbuck, twenty-dollar bill, Jackson, double sawbuck, fifty-dollar bill, hundred-dollar bill, C-note, penny, cent, Lincoln cent, indian head penny, copper, two-cent piece three-cent piece, half- dime, nickel, buffalo nickel, V nickel, dime, disme, mercury dime, quarter, two bits, half dollar, dollar, silver dollar, Eisenhower dollar, Susan B, Anthony dollar, precious metals, gold, silver, copper, bullion, ingot, nugget, petty cash, pocket money, change, small change, small coin, doit, stiver, rap, mite, farthing, sou, penny, shilling, tester, groat, guinea, rouleau, wampum, good sum, round sum, lump sum, power of money, plum, lac of rupees, major coin, crown, minor coin, monetarist, monetary theory, numismatics, chrysology, numismatist, paper money, greenback, major denomination, minor denomination, money order, postal money order, Post Office order, bank note, bond, bill, bill of exchange, order, warrant, coupon, debenture, exchequer bill, assignat, blueback, hundi, shinplaster, note, note of hand, promissory note, I O U, draft, check, cheque, back-dated check, negotiable order of withdrawal, NOW, remittance, credit, liability, drawer, drawee, obligor, obligee, moneyer, coiner, false money, bad money, base coin, flash note, slip, kite, fancy stocks, Bank of Elegance, argumentum ad crumenam, letter of credit, circulation, multiplier effect, inflation, double-digit inflation, hyperinflation, erosion of the currency, debasement of the currency, deflation, stagflation, exchange rate, rate of exchange, floating exchange rates, fixed rates, currency counter, currency exchange, bureau de change, gold-backed currency, gold standard, silver standard, bank account, savings account, checking account, money market account, NOW account, time deposit, deposit, demand deposit, super NOW account, certificate of deposit, CD, $, US$, Y, A$, Federal Reserve Bank, central bank, Federal Reserve Board, board of governors of the Federal Reserve, Treasury Department, Secret Service, mint, bureau of engraving, seigniorage, counterfeit, funny money, bogus money, (falsehood), interest, interest rate, discount rate, monetary, pecuniary, crumenal, fiscal, financial, sumptuary, numismatic, numismatical, sterling, nummary, barbarus ipse placet dummodo sit dives, but the jingling of the guinea helps the hurt that, Gelt regiert die Welt, money rules the world, money makes the world go round, nervos belli pecuniam infinitam, redet Geld so schweigt die Welt, money is the mother's milk of politics, money is the root of all evil, money isn't everything, as phony as a three-dollar bill, don't take any wooden nickels, money, legal tender, money matters, money market, finance, accounts, funds, treasure, capital, stock, assets, wealth, supplies, ways and means, wherewithal, sinews of war, almighty dollar, needful, cash, mammon, dough, cabbage, money-like instruments, M, M, sum, amount, balance, balance sheet, sum total, proceeds, currency, circulating medium, specie, coin, piece, hard cash, cold cash, dollar, sterling coin, pounds shillings and pence, Ls, d, pocket, breeches pocket, purse, money in hand, cash at hand, ready money, ready cash, slug, wad wad of bills, wad of money, thick wad of bills, roll of dough, rhino, blunt, dust, mopus, tin, salt, chink, argent comptant, bottom dollar, buzzard dollar, checks, dibs, double eagle, eagle, Federal currency, fractional currency, postal currency, Federal Reserve Note, United States Note, silver certificate, gold certificate, long bit, short bit, moss, nickel, pile, pin money, quarter, red cent, roanoke, rock, seawan, seawant, thousand dollars, grand, single, one-dollar bill, two- dollar bill, five-dollar bill, fiver, fin, Lincoln, ten-dollar bill, sawbuck, twenty-dollar bill, Jackson, double sawbuck, fifty-dollar bill, hundred-dollar bill, C-note, penny, cent, Lincoln cent, indian head penny, copper, two-cent piece three-cent piece, half- dime, nickel, buffalo nickel, V nickel, dime, disme, mercury dime, quarter, two bits, half dollar, dollar, silver dollar, Eisenhower dollar, Susan B, Anthony dollar, precious metals, gold, silver, copper, bullion, ingot, nugget, petty cash, pocket money, change, small change, small coin, doit, stiver, rap, mite, farthing, sou, penny, shilling, tester, groat, guinea, rouleau, wampum, good sum, round sum, lump sum, power of money, plum, lac of rupees, major coin, crown, minor coin, monetarist, monetary theory, numismatics, chrysology, numismatist, paper money, greenback, major denomination, minor denomination, money order, postal money order, Post Office order, bank note, bond, bill, bill of exchange, order, warrant, coupon, debenture, exchequer bill, assignat, blueback, hundi, shinplaster, note, note of hand, promissory note, I O U, draft, check, cheque, back-dated check, negotiable order of withdrawal, NOW, remittance, credit, liability, drawer, drawee, obligor, obligee, moneyer, coiner, false money, bad money, base coin, flash note, slip, kite, fancy stocks, Bank of Elegance, argumentum ad crumenam, letter of credit, circulation, multiplier effect, inflation, double-digit inflation, hyperinflation, erosion of the currency, debasement of the currency, deflation, stagflation, exchange rate, rate of exchange, floating exchange rates, fixed rates, currency counter, currency exchange, bureau de change, gold-backed currency, gold standard, silver standard, bank account, savings account, checking account, money market account, NOW account, time deposit, deposit, demand deposit, super NOW account, certificate of deposit, CD, $, US$, Y, A$, Federal Reserve Bank, central bank, Federal Reserve Board, board of governors of the Federal Reserve, Treasury Department, Secret Service, mint, bureau of engraving, seigniorage, counterfeit, funny money, bogus money, (falsehood), interest, interest rate, discount rate, monetary, pecuniary, crumenal, fiscal, financial, sumptuary, numismatic, numismatical, sterling, nummary, barbarus ipse placet dummodo sit dives, but the jingling of the guinea helps the hurt that, Gelt regiert die Welt, money rules the world, money makes the world go round, nervos belli pecuniam infinitam, redet Geld so schweigt die Welt, money is the mother's milk of politics, money is the root of all evil, money isn't everything, as phony as a three-dollar bill, don't take any wooden nickels.

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