The definition of coal is a dark brown to black carbon-rich rock that is mined from mountains or below ground and is burned as fuel.
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
Origin: ME & OE col, charcoal, live coal, akin to Ger kohle, ON kol < IE base *g(e)u-lo-, live coal > Ir gual
See coal in American Heritage Dictionary 4
Origin: Middle English col
Origin: , from Old English.
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