charcoal /ˈtʃɑɚˌkoʊl/ noun Learner's definition of CHARCOAL
[noncount]
1
: a hard black material that is made by burning wood with a small amount of air炭；木炭 ◊ Charcoal is burned for cooking food and is also made into sticks that are used for drawing pictures.木炭可作烹饪燃料或绘画炭笔。
2
: a dark gray color深灰色 — see color picture on this page