noun
Etymology: so called from its splintery fracture
: a very hard bituminous steam coal of dull appearance and laminated structure that gives out intense heat when burning — compare bright coal
noun
Etymology: so called from its splintery fracture
: a very hard bituminous steam coal of dull appearance and laminated structure that gives out intense heat when burning — compare bright coal
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012