A town in the Allier department, Auvergne-Rhône-Alpes, France, the capital of Vichy France during World War II. / (historical, figuratively, metonymically) Vichy France; the Vichy French government.

(obsolete, now only nonstandard, rare) Alternative spelling of chalk

catechol oxidase

(bingo) A traditional call for the number eighty-eight.