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also smooth bore  (smo͞oth′bôr′)
Having no rifling within the barrel. Used of a firearm.
A firearm having no rifling.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. (Firearms, Gunnery, Ordnance & Artillery) (modifier) (of a firearm) having an unrifled bore: a smoothbore musket.
2. (Firearms, Gunnery, Ordnance & Artillery) such a firearm
ˈsmoothˌbored adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈsmuðˌbɔr, -ˌboʊr)

1. (of a firearm) having a smooth bore; not rifled.
2. a smoothbore gun.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.smoothbore - a firearm that has no rifling
firearm, small-arm, piece - a portable gun; "he wore his firearm in a shoulder holster"
Adj.1.smoothbore - of a firearmsmoothbore - of a firearm; not having rifling or internal spiral grooves inside the barrel
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
The T-90S tank is equipped with a 125mm smoothbore gun stabilised in elevation and azimuth that is capable of firing all types of ammunition, including laser-guided missiles (Invar) to a range of 5km.
The 20-gauge smoothbore gun is ideal for shooting game birds," the source said.
Henson pleaded guilty to possession of a prohibited smoothbore gun, driving without a licence, driving without insurance, dangerous driving, having a lock knife and possession of cannabis in relation to the incident on July 23.
Al-Khalid, popularly termed the military's armoured fist, is equipped with a 125mm smoothbore gun and the 9M119M Refleks, an anti-tank guided missile.
It was a breechloading conversion of earlier smoothbore flintlock and percussion muskets (which were later rifled) and rifles, based on the American-designed Snider swinging-block system.
This type of slug offers best-in-class performance from smoothbore tubes.
Comparing it to the Brown Bess smoothbore musket that most troops were still using at the time, it was indeed a marvel of accuracy.
gas regulated, smoothbore semi-auto shotgun feeds from one of three magazine tubes, each capable of holding four, 3-inch shotgun shells or five, 2-inch shotgun shells.
"The only such weapons available to individual soldiers of the Revolutionary War were smoothbore flintlock muskets with bayonets, long guns, pistols and sabers."
Here are a few tips to keep that slick-running smoothbore running smoothly.
Regarding the turret, the Leopard2PL retains the Leopard-2's baseline Rheinmetall L44120mm smoothbore gun, but this weapon is modified to be compatible with Rheinmetall's DM11 programmable projectile, and DM53 and DM63 armour-piercing rounds.