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smooth·borealso smooth bore (smo͞oth′bôr′)
Having no rifling within the barrel. Used of a firearm.
A firearm having no rifling.
1. (Firearms, Gunnery, Ordnance & Artillery) (modifier) (of a firearm) having an unrifled bore: a smoothbore musket.
2. (Firearms, Gunnery, Ordnance & Artillery) such a firearm
1. (of a firearm) having a smooth bore; not rifled.n.
2. a smoothbore gun.