Coquilles is a French word that means "shells" in English. When used in cooking, coquilles usually refer to scallop shells that are used as a serving dish for various types of food. Some synonyms for coquilles include shells, mollusks, bivalves, and conches. The word conjugates as singular "coquille" to plural "coquilles". In a culinary context, "coquilles" can also refer to dishes that are prepared with seafood, such as "coquilles Saint-Jacques" which are scallops that are baked with mushrooms, cream, and cheese. Other seafood dishes that can be served in coquilles include crab, shrimp, lobster or salmon.