(of a gun or other device 枪或其他设备 worked by quickly pulling or pressing part of it in and out or up and down 唧筒式的；压动式的 a pump-action shotgun 唧筒式猎枪 a pump-action spray 手压式喷雾器
Oxford Collocations DictionaryPump-action is used with these nouns:- shotgun