• synonyms

firing pin

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noun Ordnance.
  1. 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for firing pin

Historical Examples

  • His gun must have been tampered with, the firing-pin filed off perhaps.

    Astounding Stories of Super-Science, May, 1930


  • He took it from her and pointed out where it had been dented by the firing-pin.

    Hidden Gold

    Wilder Anthony

  • Such as are used in fixed ammunition and go off by the snap of the firing-pin.

    The Gunner's Examiner

    Harold E. Cloke

  • But the firing-pin is not the only means of exploding the torpedo.

    Inventions of the Great War

    A. Russell (Alexander Russell) Bond

  • At the nose of the torpedo is a firing-pin, with which the war-head is exploded.

    Inventions of the Great War

    A. Russell (Alexander Russell) Bond

British Dictionary definitions for firing pin

firing pin

  1. 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