| an air-cooled, fully automatic rifle capable of firing 200 to 350 rounds per minute. Abbreviation: BAR |
| Browning automatic rifle n. Abbr. BAR A .30-caliber air-cooled, automatic or semiautomatic, gas-operated, magazine-fed rifle used by U.S. troops in World Wars I and II and the Korean War. [After John Moses Browning.] |