noun

1. A reddish-brown, malleable, ductile metallic element with high electrical and thermal conductivity, symbol Cu, and atomic number 29.

2. The reddish-brown colour/color of copper.

3. Any of various specialized items that are made of copper, where the use of copper is either traditional or vital to the function of the item.

Synonyms: chestnut, russet

verb

1. To sheathe or coat with copper.

adjective

1. Made of copper.

2. Having the reddish-brown colour/color of copper.

Synonyms: coppery, coppern