casserole

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A dish, usually of earthenware, glass, or cast iron, in which food is both baked and served.
• noun Food prepared and served in such a dish.
• noun Chemistry A small-handled, deep porcelain crucible used for heating and evaporating.

from The Century Dictionary.

• noun A stew-pan or saucepan.
• noun Hence— A dish prepared in such a pan; a sort of stew: as, a casserole of mutton.
• noun A sort of cup made of rice, mashed potatoes, or the like, and browned in the oven, designed to contain some delicate and highly flavored dish.
• noun Less properly, a rim or edging, as of rice, around the edge of a dish of stew, or the like.
• noun A small handled dish, almost as deep as it is wide, made of porcelain, and holding from 5 to 20 ounces, used in chemical laboratories for evaporating solutions to dryness and for other purposes.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Chem.) A small round dish with a handle, usually of porcelain.
• noun (Cookery) A mold (in the shape of a hollow vessel or incasement) of boiled rice, mashed potato or paste, baked, and afterwards filled with vegetables or meat.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A dish of glass or earthenware, with a lid, in which food is baked and sometimes served.
• noun Food, such as a stew, cooked in such a dish.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun food cooked and served in a casserole
• noun large deep dish in which food can be cooked and served