The characteristic purplish-red colour of the flowers or leaves of these plants.
A red to purple azo dye used as a biological stain, and in some countries in cosmetics and as a food colouring.
Any of various herbs of the genus Amaranthus.
The seed of these plants, used as a cereal.
The reddish-brown colour/color of copper.
A police officer.
A reddish-brown, malleable, ductile metallic element with high electrical and thermal conductivity, symbol Cu, and atomic number 29.
Any of various lycaenid butterflies with copper-coloured upperwings, especially those of the genera Lycaena and Paralucia.
To sheathe or coat with copper.
Made of copper.
Having the reddish-brown colour/color of copper.