Meaning

noun a town in central France (south of Paris) noted for hot mineral springs; was capital of the unoccupied part of France during World War II

originFrom French Vichy, from Occitan Vichèi, phonetically evolved from the Latin place name Vippiacus, itself named after an agricultural field belonging to a farmer named Vippius. An alternate theory attributes the name to the Latin vicus calidus, meaning "warm settlement."

Etymology from Wiktionary, CC BY-SA 3.0