/ Dictionary / Index C château d'eau*: Meaning and Definition of Find definitions for: châ•teau d'eau Pronunciation: (shä-tō dō'), [key] — pl. châ•teaux d'eau an architecturally treated fountain or cistern. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Châteaubriand Châteauguay Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language