pump action

/pəmp ˌækʃən/
IPA guide

Definitions of pump action
  1. noun
    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
    synonyms: slide action
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    type of:
    action, action mechanism
    the operating part that transmits power to a mechanism
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