Breadcrumb Home > Dictionary > Index W water back: Meaning and Definition of Find definitions for: wa'ter back" Pronunciation: [key] a reservoir or arrangement of tubing at the back of certain stoves or fireplaces for containing water to be heated by the fire. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. water arum water ballet ✖ Related Content Daily Word Quiz: quadrumanous Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language