0 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:
1 a hard, black substance that is dug from the earth in lumps and used as a fuel, or a single piece of this substance:
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.
Wood, coal, oil, petrol and gas are all different kinds of fuel.
We ordered a hundredweight of coal.
