The Collaborative International Dictionary
wood coal
Lignite \Lig"nite\ (l[i^]g"n[imac]t), n. [L. lignum wood: cf. F. lignite.] (Min.) Mineral coal retaining the texture of the wood from which it was formed, and burning with an empyreumatic odor. It is of more recent origin than the anthracite and bituminous coal of the proper coal series. Called also brown coal, wood coal.
WordNet
wood coal
n. intermediate between peat and bituminous coal [syn: lignite, brown coal]
a carbonaceous material obtained by heating wood or other organic matter in the absence of air [syn: charcoal]
Usage examples of "wood coal".
Poor Jerry selected for his next investigation a little, red hot wood coal and, after a bit of tentative sniffing, picked it up boldly in both forepaws.