/ Dictionary / Index M miler: Meaning and Definition of Find definitions for: mil•er Pronunciation: (mī'lur), [key] — n. a participant in a one-mile race. an athlete who specializes in one-mile races. a racehorse that can compete well in a one-mile race. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: miler (Thesaurus) milepost Miles Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language