Bovey coal

from The Century Dictionary.

• See coal.

from the GNU version of the Collaborative International Dictionary of English.

• (Min.) A kind of mineral coal, or brown lignite, burning with a weak flame, and generally a disagreeable odor; -- found at Bovey Tracey, Devonshire, England. It is of geological age of the oölite, and not of the true coal era.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun mineralogy A kind of brown lignite.