piston pistolwise • pistonhead · · · Info · Definitions · Synonyms · Characters · · piston · · Text Latin · · Script 6 · · Length Definitions · · · (noun) United States neoclassical composer (1894-1976). Synonyms: Piston, Walter Piston. · · Noun Definition 1 (noun) mechanical device that has a plunging or thrusting motion. Synonyms: plunger. · · Noun Definition 2 Synonyms · · · plunger · · Synonym 1 Characters · · i latin small letter i U+0069 n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 s latin small letter s U+0073 t latin small letter t U+0074