1. a single-shot, muzzleloading rifle, of .577 caliber, used by the British army in the Crimean War and in limited numbers by both sides in the American Civil War.
2. a bolt-action, breech-loading, .303-caliber magazine rifle introduced in Britain in 1902.
3. an American .30-caliber rifle used in World War I by U.S. troops, patterned after the British Enfield rifle. Also called Enfield .
[ named after ENFIELD, England, where it was first made ]