/ Dictionary / Index S sonobuoy: Meaning and Definition of Find definitions for: son•o•bu•oy Pronunciation: (son'u-b"e, -boi"), [key] — n. Navig. a buoy that emits a radio signal on receiving an underwater signal from a vessel. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sono- son of a bitch Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language