- noun a covered dish used for cooking food in the oven
- noun food cooked in a covered dish in the oven
- feminine A heavy metal, glass or earthenware dish with a tightly fitting lid used for slow cooking of meat, vegetables, etc.
- feminine Any food cooked in a casserole
- feminine The trade description for one-dish, in-flight meals prepared by commercial companies for airlines
- verb to cook something in a casserole