pump-action 
adjective
1Denoting a repeating firearm in which a new round is brought from the magazine into the breech by a slide action in line with the barrel: a pump-action shotgun...
- The firearm used was a pump-action shotgun, a weapon banned in the UK for more than a decade.
- A car pulled up alongside and the gunman fired three rounds from a pump-action shotgun.
- They're heavily armed, pump-action shot guns, handguns and cuffs.
2Denoting an unpressurized spray dispenser for liquid that is worked by finger action rather than by internal pressure (as in an aerosol): a preference for pump-action sprays and roll-on applicators...
- To a 1-quart pump-action spray bottle, add 1 teaspoon each mild dishwashing liquid and cooking oil, then enough water to make 1 quart; shake to mix.
- A subway station in a suburb of Washington DC was closed after the armed man released the spray from a pump-action bottle as police arrested him.
- This was a kind of pump-action bleach spray that was supposed to give your hair that much sought after sun-kissed look.