Other forms: sculleries
You're most likely to see the word scullery in an English novel, since it's a small room off the kitchen, usually in a very old, very British home.
In the old days, maids cleaned dishes and utensils — and sometimes clothing — in the scullery, out of sight of their wealthy employers. In some parts of Britain, the word scullery is still used to mean "kitchen," although few people would claim to employ a "scullery maid," or a low-ranking member of a household staff. The root of the word is in doubt, but it probably comes from the Latin word for wooden platter, scutra, or the Old Norse skola, "to wash."