​ VICHY, a town of France, in the department of the Allier; in a valley of the river of that name, about 70 miles S. E. of Paris. It was once a place of strength, and is celebrated for its thermal alkaline springs. The Vichy waters are in much request for disorders of the stomach and bowels, and of the urinary organs, in gout, rheumatism, etc. Much of the water is sent out in bottles. Pop. about 17,500.