1. not having spiral grooves cut into the bore of a firearm barrel
Usage: firearms terminology

Examples

• The musket had an unrifled barrel, making it less accurate at long distances.
• Early cannons were unrifled and relied on large projectiles rather than precision.
• The antique shotgun featured an unrifled bore typical of its era.
• Unrifled barrels were common before the development of rifling technology.
• The collector explained that unrifled firearms were standard in the 18th century.