lubricating oil lubricated • lubricating substance · · · Info · Definitions · Synonyms · Characters · · lubricating oil · · Text Common · · Latin · · Scripts 15 · · Length 5 · · Syllables Definitions · · · (noun) a thick fatty oil (especially one used to lubricate machinery). Synonyms: grease, lubricating oil. · · Noun Definition 1 Synonyms · · · grease · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 c latin small letter c U+0063 g latin small letter g U+0067 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075