fuel oil fuel line • fuel pod · · · Info · Definitions · Synonyms · Characters · · fuel oil · · Text Common · · Latin · · Scripts 8 · · Length 3 · · Syllables Definitions · · · (noun) a petroleum product used for fuel. Synonyms: fuel oil, heating oil. · · Noun Definition 1 Synonyms · · · heating oil · · Synonym 1 Characters · · space U+0020 e latin small letter e U+0065 f latin small letter f U+0066 i latin small letter i U+0069 l latin small letter l U+006C o latin small letter o U+006F u latin small letter u U+0075