/ Dictionary / Index M major league: Meaning and Definition of Find definitions for: ma'jor league' Pronunciation: [key] either of the two main professional baseball leagues in the U.S. a league of corresponding stature in certain other sports, as ice hockey, football, or basketball. ma•jor-league Pronunciation: (mā'jur-lēg'), [key] — adj. of, pertaining to, or characteristic of the major leagues. belonging to or among the best or most important of its kind: a major-league orchestra. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. major key major-leaguer Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language