a hard,black substance that is dug from the earth in pieces, and can be burned to produce heat or power, or a single piece of this
Wood and coal are both combustible substances.
The coal fire had discoloured the paintwork.
Many miners have suffered from the effects of coal dust in their lungs.
The blacksmith carefully arranged the coal in the furnace, preparing to forge a new set of tools.
As winter approached, families stocked up on coal to keep their homes warm during the cold months.
The coal mine workers descended into the depths of the earth to extract the valuable fuel.
She placed a single piece of coal in the fireplace, watching as the flames danced and flickered in the hearth.
