Charcoal is a type of black, crumbly material made from burning wood or other organic matter. It is used for cooking, drawing, and purifying things because it can burn without giving off much smoke or flame. Full definition
I mean they had him drinking the whole cup of activated charcoal in liquid form, in the ER. (justinhealth.com)
Showing in charcoal black on a soft beige background - more colours are available. (wallpaperdirect.com)
Starting with charcoal drawings on paper, she makes a multitude of color studies in her studio before arriving at her final choice. (hamptonsarthub.com)