Copper Penny

Copper

Copper is a chemical element; it has symbol Cu and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color. Copper is used as a conductor of heat and electricity, as a building material, and as a constituent of various metal alloys, such as sterling silver used in jewelry, cupronickel used to make marine hardware and coins, and constantan used in strain gauges and thermocouples for temperature measurement.

Penny

A penny is a coin or a unit of currency in various countries. Borrowed from the Carolingian denarius, it is usually the smallest denomination within a currency system. At present, it is the formal name of the British penny unit and the de facto name of the American one-cent coin.

Copper (color)

Copper is a reddish brown color that resembles the metal copper. The first recorded use of copper as a color name in English was in 1594.

copper

Noun

1. A reddish-brown metallic chemical element (symbol Cu) with the atomic number 29; also, the metal made up of this element.
2. The reddish-brown colour of copper (etymology 1, noun sense 1).

Adjective

1. Made of copper (etymology 1, noun sense 1).
2. Having the reddish-brown colour of copper.

penny

Noun

1. In the United Kingdom and Ireland and many other countries, a unit of currency worth ⁄240 of a pound sterling or Irish pound before decimalisation, or a copper coin worth this amount. Abbreviation: d.
2. In the United Kingdom, a unit of currency worth ⁄100 of a pound sterling, or a copper coin worth this amount. Abbreviation: p.

Verb

1. To jam a door shut by inserting pennies between the doorframe and the door.
2. To circumvent the tripping of an electrical circuit breaker by the dangerous practice of inserting a coin in place of a fuse in a fuse socket.