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  1. Oxford American Dictionary

    firing pin

    • n.
      a movable pin in a firearm that strikes the primer of a cartridge to set off the charge

    • noun: firing pin, plural noun: firing pins

    • 釋義

    名詞

    • 1. a movable pin in a firearm that strikes the primer of a cartridge to set off the charge seven of my riflemen did not have firing pins