smoothbore

adjective

smooth·​bore ˈsmüt͟h-ˈbȯr How to pronounce smoothbore (audio)
of a firearm
: having a barrel with an unrifled bore
smoothbore noun

Examples of smoothbore 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.
In contrast to the smoothbore cannons on contemporary Western tanks, the L30 is rifled. David Axe, Forbes, 27 Mar. 2024 The type remained the mainstay of the Soviet Union’s allies and export clients even after the Red Army inducted the similar, but lengthened T-62 tank with a 115-millimeter smoothbore gun, and then T-64, T-72, and T-80 series tanks with autoloading 125-millimeter guns and three-man crews. Sébastien Roblin, Popular Mechanics, 24 Mar. 2023 By comparison, standard smoothbore slugs are between .72- and .75-caliber. Joe Genzel, Outdoor Life, 10 Aug. 2022

Word History

First Known Use

1754, in the meaning defined above

Time Traveler
The first known use of smoothbore was in 1754

Cite this Entry

“Smoothbore.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/smoothbore. Accessed 10 Sep. 2025.

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