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English definition of “pump-action”

pump-action

adjective [before noun]     /ˈpʌmp.æk.ʃən/
refers to a device that operates by forcing something, especially air , in or out of a closed space or container : a pump-action shotgun a pump-action toilet Generating and pumping devices
(Definition of pump-action adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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