A black rock formed from prehistoric plant remains, composed largely of carbon and burned as a fuel.
Put some coal on the fire.
A piece of coal used for burning (this use is less common in American English)
Put some coals on the fire.
A type of coal, such as bituminous, anthracite, or lignite, and grades and varieties thereof.
A 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.
Charcoal.
To take on a supply of coal (usually of steam ships).
To supply with coal.
to coal a steamer
To be converted to charcoal.
To burn to charcoal; to char.
To mark or delineate with charcoal.