sub-machine gun

noun
🔊/ˌsʌb məˈʃiːn ɡʌn/
🔊/ˌsʌb məˈʃiːn ɡʌn/
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  1. a light machine gun that you can hold in your hands to fire冲锋枪;轻型自动枪Topics War and conflictc2