action mechanism action machiner • action noun · · · Info · Definitions · Synonyms · Characters · · action mechanism · · Text Common · · Latin · · Scripts 16 · · Length 6 · · Syllables Definitions · · · (noun) the operating part that transmits power to a mechanism. Synonyms: action, action mechanism. Example: "The piano had a very stiff action." · · Noun Definition 1 Synonyms · · · action · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F s latin small letter s U+0073 t latin small letter t U+0074