/ Dictionary / Index C coal oil: Meaning and Definition of Find definitions for: coal' oil" Pronunciation: [key] — Older U.S. Use and Canadian. petroleum obtained by the destructive distillation of bituminous coal. kerosene. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. coal mine coal pit Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language