black copper

noun

, Metallurgy.

1. a regulus of 95-percent-pure copper, produced in a blast furnace by smelting oxidized copper ores.

Example Sentences

“Slaveowners resorted to tricks. They delayed. They postponed. This was money,” said Gibbs, author of “Black, Copper & Bright: The District of Columbia’s Black Civil War Regiment.”

From Washington Post

Olivia, a Black Copper Marans who lays chocolate-colored speckled eggs, is convinced that she’s constantly in a state of starvation and will push the others out of the way when I’m giving out treats.

From Washington Post

The Trunk is available in black / copper or blue / silver color combinations.

From The Verge

Samsung’s Galaxy Buds Live are expected to come in black, copper, and white.

From The Verge

Gibbs, a historian and author of “Black, Copper & Bright: The District of Columbia’s Black Civil War Regiment,” explained that the kneeling slave depicted in the Emancipation Monument was most likely inspired by an old abolitionist image used to fight for freedom for enslaved black people.

From Washington Post