Thompson submachine gun


Thomp·son submachine gun

noun \ˈtäm(p)-sən-\

Definition of THOMPSON SUBMACHINE GUN

:  a .45 caliber submachine gun with a drum or stick magazine, a pistol grip, and a detachable buttstock

Origin of THOMPSON SUBMACHINE GUN

John T. Thompson †1940 American army officer
First Known Use: 1920

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