/ Dictionary / Index W white hole: Meaning and Definition of Find definitions for: white' hole' Pronunciation: [key] pigeonhole (def. 3). a theoretical celestial object into which matter is funneled from a black hole. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. white hellebore white hope Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language