Definition of pump-action adjective from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈpʌmp ækʃn//
; NAmE NAmE//ˈpʌmp ækʃn//
[only before noun]
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(of a gun or other device) worked by quickly pulling or pressing part of it in and out or up and down a pump-action shotgun a pump-action spray
See the Oxford Advanced American Dictionary entry: pump-action