Longman Dictionary of Contemporary English homepage

Date: 1900-2000
Origin: Thompson submachine gun (20-21 centuries), from John T. Thompson (1860-1940), U.S. general who invented the gun

tommy gun

 noun
     
Related topics: Weapons
tom‧my gun [countable]
old-fashioned informalPMW a gun that can fire many bullets very quickly
Definition from the Longman Dictionary of Contemporary English
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