/ Dictionary / Index S Springfield rifle: Meaning and Definition of Find definitions for: Spring'field ri'fle Pronunciation: [key] a single-shot, breechloading .45-caliber rifle used by the U.S. Army from 1867 to 1893. Also calleda bolt-operated, magazine-fed, .30-caliber rifle adopted by the U.S. Army in 1903 and used during World War I. a single-shot, muzzleloading rifle of .58-inch caliber, used by the Union Army during the Civil War. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Springfield springform pan Related Content Daily Word Quiz: blanch Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language