/ Dictionary / Index N National League: Meaning and Definition of Find definitions for: Na'tional League' Pronunciation: [key] the older of the two major professional U.S. baseball leagues, established in 1876. Abbr.: N.L. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. National Labor Relations Board National Liberation Front Related Content Daily Word Quiz: prevalent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language