A fossil plant of the carboniferous strata. / A power station using coal as its energy source.

Third-person singular simple present indicative form of roll coal

simple past tense and past participle of roll coal

present participle of roll coal

Mineral coal, as opposed to charcoal / Any hard coal. / Anthracite.

plural of coal hole

plural of coal cracker

Containing or yielding coal

(geology) The measure or degree of the progressive coalification (organic metamorphism) of a coal, often expressed in terms of vitrinite reflectance.

plural of coal rank