/ Dictionary / Index W whistling buoy: Meaning and Definition of Find definitions for: whis'tling bu'oy Pronunciation: [key] — Naut. Naut. a buoy having a whistle operated by air trapped and compressed in an open-bottomed chamber by the rising and falling water level caused by natural wave action. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. whistling whistling duck Related Content Daily Word Quiz: sinister Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language