Coal

1. n. A black, or brownish black, solid, combustible substance, dug from beds or veins in the earth to be used for fuel, and consisting, like charcoal, mainly of carbon, but more compact, and often affording, when heated, a large amount of volatile matter.
2. n. A thoroughly charred, and extinguished or still ignited, fragment from wood or other combustible substance; charcoal.
3. v. t. To mark or delineate with charcoal.
4. v. t. To supply with coal; as, to coal a steamer.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.