The upper stratum of coal.

(obsolete, idiomatic) A troublemaker.

plural of coal train

A kind of small coal much used by smiths.

Soft coal that breaks off easily into small, irregular cubes with a shining luster.

(mineralogy) Any hard, lustrous coal such as anthracite

A coal which has a grade between bituminous coal and anthracite, and which was once widely used as a fuel for steam engines in ships and locomotives.

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

plural of coal plant

Coal dug from a pit, not charcoal.