a hard black mineral which is dug out of the ground and burnt to produce heat:
Put some coal on the fire.
the coal mining industry
a lump of coal
2 [countable usually plural]DH
a piece of coal, especially one that is burning:
Red hot coals glowed in the grate.
3 [countable usually plural] American English
a piece of wood or coal that is burning [↪ charcoal]:
Grill over hot coals for two minutes.
4 British English
to take something to a place where there is already plenty of it available
to speak angrily to someone because they have done something wrong