coal oil coalmouse • coal operator · · · Info · Definitions · Synonyms · Characters · · coal oil · · Text Common · · Latin · · Scripts 8 · · Length 3 · · Syllables Definitions · · · (noun) a flammable hydrocarbon oil used as fuel in lamps and heaters. Synonyms: kerosene, kerosine, lamp oil, coal oil. · · Noun Definition 1 Synonyms · · · kerosene · · Synonym 1 kerosine · · Synonym 2 lamp oil · · Synonym 3 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 i latin small letter i U+0069 l latin small letter l U+006C o latin small letter o U+006F