/ Dictionary / Index F Father's Day: Meaning and Definition of Find definitions for: Fa'ther's Day" Pronunciation: [key] a day, usually the third Sunday in June, set aside in honor of fathers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. fatherly father substitute Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language