The Collaborative International Dictionary of English v.0.48:

Kitchen \Kitch"en\ (k[i^]ch"[e^]n), n. [OE. kichen, kichene,
   kuchene, AS. cycene, L. coquina, equiv. to culina a kitchen,
   fr. coquinus pertaining to cooking, fr. coquere to cook. See
   Cook to prepare food, and cf. Cuisine.]
   1. A room equipped for cooking food; the room of a house,
      restaurant, or other building appropriated to cookery.
      [1913 Webster]

            Cool was his kitchen, though his brains were hot.
                                                  --Dryden.
      [1913 Webster]

            A fat kitchen makes a lean will.      --Franklin.
      [1913 Webster]

   2. A utensil for roasting meat; as, a tin kitchen.
      [1913 Webster]

   3. The staff that works in a kitchen.
      [PJC]

   Kitchen garden. See under Garden.

   Kitchen lee, dirty soapsuds. [Obs.] "A brazen tub of
      kitchen lee." --Ford.

   Kitchen stuff, fat collected from pots and pans. --Donne.
      [1913 Webster]