Vichy water \Vi"chy wa`ter\ A mineral water found at Vichy, France. It is essentially an effervescent solution of sodium, calcium, and magnetism carbonates, with sodium and potassium chlorides; also, by extension, any artificial or natural water resembling in composition the Vichy water proper. Called also, colloquially, Vichy.
Vichy water n : sparkling mineral water from springs at Vichy, France or water similar to it