تعريف pump-action في الإنجليزية الإنجليزية القاموس.
a pump-action piece of equipment is operated by pulling or pressing a part in or out so that the contents come out in short bursts pump-action shotgun/rifle
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