nounπShareA black rock formed from prehistoric plant remains, composed largely of carbon and burned as a fuel."Put some coal on the fire."materialsubstancegeologyfuelenergyenvironmentessentialChat with AIVocabulary GamePractice Reading
nounπShareA piece of coal used for burning (this use is less common in American English)"Put some coals on the fire."materialfuelessentialChat with AIVocabulary GamePractice Reading
nounπShareA type of coal, such as bituminous, anthracite, or lignite, and grades and varieties thereof."The power plant uses coal to generate electricity. "materialsubstancegeologyenergyfuelessentialChat with AIVocabulary GamePractice Reading
nounπShareA glowing or charred piece of coal, wood, or other solid fuel."Just as the camp-fire died down to just coals, with no flames to burn the marshmallows, someone dumped a whole load of wood on, so I gave up and went to bed."materialsubstancegeologyenergyfuelessentialChat with AIVocabulary GamePractice Reading
nounπShareCharcoal."The artist used coal to create a dark, textured drawing. "materialsubstancefuelenergyessentialChat with AIVocabulary GamePractice Reading
verbπShareTo take on a supply of coal (usually of steam ships)."The ship's crew needed to coal up before setting sail again. "nauticalfuelmaterialindustryenergyessentialChat with AIVocabulary GamePractice Reading
verbπShareTo supply with coal."to coal a steamer"materialfuelenergyindustryessentialChat with AIVocabulary GamePractice Reading
verbπShareTo be converted to charcoal."The wood needs to be coal before it can be used in the barbecue. "fuelmaterialsubstanceenergyprocessessentialChat with AIVocabulary GamePractice Reading
verbπShareTo burn to charcoal; to char."The chef carefully coalized the vegetables, turning them a dark, smoky brown. "materialfuelenergychemistryessentialChat with AIVocabulary GamePractice Reading
verbπShareTo mark or delineate with charcoal."The artist coal-ed the edges of the drawing to emphasize the shape of the leaf. "markmaterialwritingessentialChat with AIVocabulary GamePractice Reading
