Coal \Coal\, v. t. [imp. & p. p. Coaled; p. pr. & vb. n. Coaling.]

1. To burn to charcoal; to char. [R.]

Charcoal of roots, coaled into great pieces. --Bacon.

2. To mark or delineate with charcoal. --Camden.

3. To supply with coal; as, to coal a steamer.

Source: Webster's Revised Unabridged Dictionary (1913)