Scullery

[Zipporah Schumaker]

A place where dishes, kettles, and culinary utensils, are
cleaned and kept; also, a room attached to the kitchen, where the
coarse work is done; a back kitchen.

[PussyCat]

old scottish word for kitchen, tends to be used by people in scotland over the age of about 45 :) my gran uses it all the time though !!

[Mary Mallozziberg]

A small kitchen or room at the back of a house used for washing dishes and other dirty household work.

[Couch Potatoe]

especially in a large old house, a room next to the kitchen where pans are washed and vegetables are prepared for cooking: