Noun assault gun has 2 senses
  1. assault rifle, assault gun - any of the automatic rifles or semiautomatic rifles with large magazines designed for military use
    --1 is a kind of automatic rifle, automatic, machine rifle
  2. assault gun - an armored vehicle with the chassis of a tank (but no turret) and a large gun; used as an antitank weapon and to support infantry
    --2 is a kind of
    armored vehicle, armoured vehicle
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