firing pin

noun

Definition of firing pin 

: the pin that strikes the cartridge primer in the breech mechanism of a firearm

Examples of firing pin in a Sentence

Recent Examples on the Web

The bullets sit on a small mound of gunpowder which burns when a gun’s firing pin strikes a primer at the base of the casing. Kyle Mizokami, Popular Mechanics, "U.S. Army Getting New Machine Gun Round, Special Ops Getting New Sniper Bullet," 10 May 2018 The hum of the crowd was broken rhythmically by the throaty sound of guns being charged and the sharp click of firing pins. Ashley Gilbertson, New York Times, "Inside the N.R.A. Convention," 9 May 2018 No sales are allowed at the show, firing pins are removed from all guns on display, and there is no live ammunition. Lisa Marie Pane, Houston Chronicle, "Gun industry converges near Las Vegas mass shooting site," 23 Jan. 2018 No sales are allowed at the show, firing pins are removed from all guns on display, and there is no live ammunition. CBS News, "Gun industry converges near site of Las Vegas mass shooting," 23 Jan. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'firing pin.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of firing pin

1874, in the meaning defined above

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The first known use of firing pin was in 1874

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