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coppering
cop·per 1 C0629400 (kŏp′ər)n.1. Symbol Cu 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 63.546; melting point 1,085°C; boiling point 2,562°C; specific gravity 8.96; valence 1, 2. See Periodic Table.2. A coin, usually of small denomination, made of copper or a copper alloy.3. Chiefly British A large cooking pot made of copper or often of iron.4. Any of various small butterflies of the subfamily Lycaeninae, having predominantly copper-colored wings.5. A reddish brown.tr.v. cop·pered, cop·per·ing, cop·pers 1. To coat or finish with a layer of copper.2. Slang To bet against, as in faro.
[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.]
cop′per·y adj.
cop·per 2 C0629400 (kŏp′ər)n. Slang A police officer.
[From cop.]IdiomsSeecoppercoppering
coppering[′käp·ər·iŋ] (ordnance) Metal fouling accumulated in the bore of a weapon because of repeated firing; deposited from the rotating bands or jackets of the projectiles. |