/ Dictionary / Index D day boy: Meaning and Definition of Find definitions for: day' boy" Pronunciation: [key] — Chiefly Brit. Chiefly Brit. a male boarding-school student who lives at home. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dayboy (Thesaurus) daybook daybreak Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language