/ Dictionary / Index W water main: Meaning and Definition of Find definitions for: wa'ter main" Pronunciation: [key] a main pipe or conduit in a system for conveying water. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. water loss waterman 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