/ Dictionary / Index W water-bus: Meaning and Definition of Find definitions for: wa•ter-bus Pronunciation: (wô'tur-bus", wot'ur-), [key] — pl. -bus•es, -bus•ses. vaporetto. any small ship or boat serving as a passenger shuttle. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Waterbury water cannon Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language