/ Dictionary / Index W water mill: Meaning and Definition of Find definitions for: wa'ter mill" Pronunciation: [key] a mill with machinery driven by water. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. water milfoil water moccasin Related Content Daily Word Quiz: hedonist Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language