Clichy (klēshēˈ) [key], suburb N of Paris (1990 pop. 48,204), Hauts-de-Seine dept., N central France. It is a modern industrial city with ironworks; automobile parts, metal products, machinery, electrical products, and plastics are also manufactured. Clichy was once a residence of Merovingian kings and was called Clippiacum in Latin. Dagobert I, king of the Franks, also resided there (7th cent.). The Church of St. Vincent de Paul, named for the saint who was parish priest to Clichy, is a major landmark.