/ Dictionary / Index O organ whistle: Meaning and Definition of Find definitions for: or'gan whis"tle Pronunciation: [key] a steam or air whistle in which the jet is forced up against the thin edge of a pipe closed at the top. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. organum organza Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language