bituminous : Idioms & Phrases

• noun rich in tarry hydrocarbons; burns readily with a smoky yellow flame
  soft coal.
  

WordNet

• a kind of coal which yields, when heated, a considerable amount of volatile bituminous matter. It burns with a yellow smoky flame.

Webster 1913

• a mineral of a brown or black color, emitting an unpleasant smell when rubbed. That of Dalmatia is so charged with bitumen that it may be cut like soap.

Webster 1913

• an argillaceous shale impregnated with bitumen, often accompanying coal.

Webster 1913

Cal*ca"re*o-bi*tu"mi*nous adjective

Definitions

1. Consisting of, or containing, lime and bitumen. Lyell.

Webster 1913