/ Dictionary / Index S saint's day: Meaning and Definition of Find definitions for: saint's' day" Pronunciation: [key] a day of celebration commemorating a particular saint. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Saintsbury saintship Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language