/ Dictionary / Index W water bomb: Meaning and Definition of Find definitions for: wa'ter bomb" Pronunciation: [key] a bag filled with water and mischievously dropped from a height upon a passerby below. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. water boatman waterborne Related Content Daily Word Quiz: eureka Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language