coquille

noun, plural co·quilles [koh-keelz; French kaw-kee-yuh] /koʊˈkilz; French kɔˌki yə/.

1. any of various seafood or chicken dishes baked with a sauce and usually served in a scallop shell or a shell-shaped serving dish.
2. the cooking utensil for baking such dishes, usually a scallop shell or small casserole resembling a shell.
3. a cooking utensil, filled with charcoal, for roasting meat on a spit.
4. the shell of an escargot.

noun

1. any dish, esp seafood, served in a scallop shellCoquilles St Jacques
2. a scallop shell, or dish resembling a shell
3. fencing a bell-shaped hand guard on a foil