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submachine gun

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noun sub·ma·chine gun \ˌsəb-mə-ˈshēn-ˌgən\

Simple Definition of submachine gun

  • : a small, light machine gun

Source: Merriam-Webster's Learner's Dictionary

Full Definition of submachine gun

  1. :  a portable automatic firearm that uses pistol-type ammunition and is fired from the shoulder or hip

1920

First Known Use of submachine gun

1920


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