bul: Черни въглища

Information
has URI	http://lexvo.org/id/term/bul/%D0%A7%D0%B5%D1%80%D0%BD%D0%B8%20%D0%B2%D1%8A%D0%B3%D0%BB%D0%B8%D1%89%D0%B0

Meaning
means	(noun) rich in tarry hydrocarbons; burns readily with a smoky yellow flame soft coal, bituminous coal
means	(noun) fossil fuel consisting of carbonized vegetable matter deposited in the Carboniferous period coal