coal S2 W2 / kəʊl $ koʊl / 名词

1 [不可数名词] 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 [可数名词，通常复数] a piece of coal, especially one that is burning :

Red hot coals glowed in the grate.

3 [可数名词，通常复数] American English a piece of wood or coal that is burning → charcoal :

Grill over hot coals for two minutes.

4 carry/take coals to Newcastle British English to take something to a place where there is already plenty of it available

5 haul/rake/drag somebody over the coals to speak angrily to someone because they have done something wrong