/ˈkɒpə(r)/ /ˈkɑːpər/

a chemical element. Copper is a soft red-brown metal used for making electric wires, pipes and coins.

He wore a copper bracelet on his wrist.

One of the most important materials is copper, and it tells us about the situation for businesses.

brown coins that do not have much value

a copper coin, especially a penny.

I only paid a few coppers for it.

a police officer

Apparently, her dad's a copper.