pump action pump • pump bob · · · Info · Definitions · Synonyms · Characters · · pump action · · Text Common · · Latin · · Scripts 11 · · Length 3 · · Syllables Definitions · · · (noun) action mechanism in a modern rifle or shotgun; a back and forward motion of a sliding lever ejects the empty shell case and cocks the firearm and loads a new round. Synonyms: pump action, slide action. · · Noun Definition 1 Synonyms · · · slide action · · Synonym 1 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 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 t latin small letter t U+0074 u latin small letter u U+0075