a malleable, ductile, metallic element having a characteristic reddish-brown color: used in large quantities as an electrical conductor and in the manufacture of alloys, as brass and bronze. Symbol: Cu; at. wt.: 63.54; at. no.: 29; sp. gr.: 8.92 at 20°C.
a metallic reddish brown.
a coin composed of copper, bronze, or the like, as the U.S. cent or the British penny.
any of several butterflies of the family Lycaenidae, as Lycaena hypophleashaving copper-colored wings spotted and edged with black.
a container made of copper.
a tool partly or wholly made of copper: a soldering copper.
a large kettle, now usually made of iron, used for cooking or to boil laundry.
—adj.
made of copper: copper kettles.
reddish-brown; coppery: The copper sun sank into the sea.