Black coal - definition of Black coal by The Free Dictionary
coal a combustible mineral used as fuel: They used coal for heating their homes. Not to be confused with: cole – cabbage or rape plant: cole slaw kohl – a preparation used as eye makeup: She accented her eyes with kohl. coal (kōl) n. 1. a. A natural dark brown to black graphitelike material used as a fuel, formed from fossilized plants and ...