coal

Coal is a dark brown to black carbon material that comes from petrified plants, is mined from mountains or below ground and is used as fuel. (noun)

An example of coal is the fuel used to grill meat on an outdoor grill using briquettes.

See coal in Webster's New World College Dictionary

noun

a kind of dark brown to black, combustible, sedimentary rock resulting from the partial decomposition of vegetable matter away from air and under varying degrees of increased temperature and pressure over a period of millions of years: used as a fuel and in the production of coke, coal gas, water gas, and many coal-tar compounds
a piece (or collectively, pieces) of this rock
a piece of glowing or charred wood, coal, or similar substance; ember
charcoal

transitive verb

intransitive verb

to take in a supply of coal

See coal in American Heritage Dictionary 4

(kōl)

noun

a. A natural dark brown to black graphitelike material used as a fuel, formed from fossilized plants and consisting of amorphous carbon with various organic and some inorganic compounds.
b. A piece of this substance.
A glowing or charred piece of solid fuel.
Charcoal.

verb coaled, coal·ing, coals

verb, transitive