submachine gun



a lightweight automatic or semiautomatic gun, fired from the shoulder or hip.

Origin of submachine gun

First recorded in 1915–20; sub- + machine gun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Word Origin and History for sub-machine gun

"light, portable machine gun," 1926, from sub- + machine gun.

Online Etymology Dictionary, © 2010 Douglas Harper