M-1: Meaning and Definition of
Pronunciation: (em'wun'), [key]
— pl. M-1's.
- a semiautomatic, gas-operated, .30 caliber, clip-fed rifle, with a weight of 8.56 lb. (3.88 kg): the standard U.S. Army rifle in World War II and in the Korean War. See illus. underAlso called
- m (Thesaurus)