- 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
His gun must have been tampered with, the firing-pin filed off perhaps.
He took it from her and pointed out where it had been dented by the firing-pin.Hidden Gold
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.
At the nose of the torpedo is a firing-pin, with which the war-head is exploded.
- 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