/ Dictionary / Index L Long Day's Journey Into Night*: Meaning and Definition of Find definitions for: Long' Day's' Jour'ney Into Night' Pronunciation: [key] a play (1956) by Eugene O'Neill. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. long-day Longden Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language