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
  • 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