smoothbore Meaning, Definition & Usage

  1. noun a firearm that has no rifling
  2. adjective of a firearm; not having rifling or internal spiral grooves inside the barrel
    unrifled.

WordNet


Smooth"bore` adjective
Definitions
  1. (Gun.) Having a bore of perfectly smooth surface; -- distinguished from rifled. -- n. A smoothbore firearm.

Webster 1913