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firing pin

noun, Ordnance.
a plunger in the firing mechanism of a firearm or cannon that strikes the cartridge primer, igniting the propelling charge.
Origin of firing pin
First recorded in 1870-75 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for firing pin
Historical Examples
  • I didn't want you finding out that I'd taken out the firing pin.

    Time and Time Again Henry Beam Piper
  • Yes—the firing pin looked like where the firing pin might have fallen on the cap.

    Warren Commission (7 of 26): Hearings Vol. VII (of 15) The President's Commission on the Assassination of President Kennedy
  • Each pistol was fired in a recoiling rest one round, in which the primer had been thinned so as to be pierced by the firing pin.

    Pistol and Revolver Shooting A. L. A. Himmelwright
  • Turning it over slowly in his fingers, he looked at the mark of the firing pin on the base.

  • He produced another cartridge from an inner pocket and compared the firing pin marks on the base of the shell.

  • It had a sliding breech block carrying the main spring and firing pin.

  • By frequent practice in this exercise, each man may come to know the exact instant his firing pin will be released.

  • I disabled the pistol—took out the firing pin—but if he finds out what I did, he may get some other weapon.

    Time and Time Again Henry Beam Piper
  • Everything was ready, except climbing aboard, closing the airlock and pressing the firing pin.

    Wind Charles Louis Fontenay
  • After the shaft makes a certain number of revolutions it sets a firing pin, and then if it hits an object it will explode.

British Dictionary definitions for firing pin

firing pin

the part of the firing mechanism of a firearm that ignites the charge by striking the primer
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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