/ Dictionary / Index F feast day: Meaning and Definition of Find definitions for: feast' day" Pronunciation: [key] a day, esp. a church holiday, for feasting and rejoicing. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. feast Feast of Booths Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language