a red-brown metal, the chemical element of atomic number 29.
In addition, fruit juices are rich in essential minerals like iron, copper , potassium, sodium, iodine and magnesium.
a copper coin, especially a penny.
you could hire a raft for a few coppers
a reddish-brown color like that of copper.
In other colourful news, I've just had some reddish / copper lowlights put in my hair.
a small butterfly of North America and Eurasia. The upper surface of its wings is typically bright reddish-orange or purple.
a police officer.
How do you know the coppers won't know you weren't there?