/ Dictionary / Index P pump-action: Meaning and Definition of Find definitions for: pump-ac•tion Pronunciation: (pump'ak"shun), [key] — adj. (of a shotgun or rifle) having an action that extracts the empty case, loads, and cocks the piece by means of a hand-operated lever that slides backward and forward; slide-action. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pump-action (Thesaurus) pump pump box Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language