copper

A reddish-brown metallic chemical element (symbol Cu) with the atomic number 29; also, the metal made up of this element.

Men talke much […] of the Philoſophers ſtone, that it turneth copper into gold; […]

Through the clear smooth water her copper shone brightly; […]

The reddish-brown colour of copper (etymology 1 sense 1).

Near-synonyms: chestnut, russet

The reddish-brown colour of copper (etymology 1 sense 1).

Any of various specialized items made of copper (etymology 1 sense 1), where the use of the metal is either necessary or traditional to the function of the item.

Coppers are generally good for a year, if the battery is carefully attended; they should, however, be removed before they have increased to such a size that their removal might cause the destruction of the glass jars.

Every millwright should have some soldering tools, and he ought to know how to use them. […] Coppers weighing one pound each are the smallest ever needed in a paper mill, and one 2-pound copper should be bought also. […] Having made the solder and bought "coppers," the first job is to tin them. Some coppers come already tinned. I didn't buy mine, so they surely were not tinned.

Any of various specialized items made of copper (etymology 1 sense 1), where the use of the metal is either necessary or traditional to the function of the item.

[H]e slid down from his seat, and darted into the public house, reappearing in a few moments with a copper of ale and a horn in his hand: he and another man held open the horses' mouths, and poured the ale through the horn down their throats.

Made of copper (etymology 1 sense 1).

Contrasting vividly with this ruin was the neat dresser, stained in the fashion, pale green, and with a number of copper and tin vessels below it, the wall-paper imitating blue and white tiles, and a couple of coolured supplements fluttering from the walls above the kitchen range.

Having the reddish-brown colour of copper.

All in a hot and copper sky, / The bloody Sun, at noon, / Right up above the mast did stand, / No bigger than the Moon.

Cold and terror had produced a chance in her complexion, which now wore a yellow, or sort of copper hue.

To coat or sheathe (something) with copper (etymology 1 sense 1).

To give (something) a colour by applying a copper salt.

To give copper coins to (someone); to pay.

In the game of faro: to place a copper coin, or now usually a small disc or token, on (a playing card) to indicate that a player bets against that card.

In the game of faro: to place a copper coin, or now usually a small disc or token, on (a playing card) to indicate that a player bets against that card.

[T]hey are going to take this whole Mississippi, and twist it around and make it run several miles up stream. […] [Y]ou have n't got to believe they can do such miracles, have you? And yet you ain't absolutely obliged to believe they can't. I reckon the safe way, where a man can afford it, is to copper the operation, and at the same time buy enough property in Vicksburg to square you up in case they win.

The dive is off. Better copper your bets while there's time.