/ Dictionary / Index W water power: Meaning and Definition of Find definitions for: wa'ter pow"er Pronunciation: [key] the power of water used, or capable of being used, to drive machinery, turbines, etc. a waterfall or descent in a watercourse capable of being so used. a water right possessed by a mill. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: waterpower (Thesaurus) water poppy water pox Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language