assault rifle

noun

: any of various intermediate-range, magazine-fed military rifles (such as the AK-47) that can be set for automatic or semiautomatic fire
also : a rifle that resembles a military assault rifle but is designed to allow only semiautomatic fire

Examples of assault rifle in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Remembering Wesley LePatner Last Monday, a twenty-seven-year-old man killed five people with an assault rifle in an office tower on Park Avenue. Cristian Farias, New Yorker, 6 Aug. 2025 That sense of serenity was shattered Monday when a man stormed the Midtown building with an assault rifle and unleashed a hailstorm of bullets, killing three people in the lobby. Holly Yan, CNN Money, 1 Aug. 2025 Monday, a crazed gunman attacked the office building housing the NFL with an AR-15 assault rifle, killing four, among them a heroic member of the NYPD. Greg Marotta, New York Daily News, 1 Aug. 2025 The assault rifle is traditionally used by members of the military, according to Gun Digest. Ashleigh Fields, The Hill, 29 July 2025 See All Example Sentences for assault rifle

Word History

First Known Use

1950, in the meaning defined above

Time Traveler
The first known use of assault rifle was in 1950

Browse Nearby Words

Cite this Entry

“Assault rifle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/assault%20rifle. Accessed 21 Aug. 2025.

Kids Definition

assault rifle

noun
: any of various especially automatic rifles designed for military use

called also assault weapon

More from Merriam-Webster on assault rifle

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!