Hamlet Soliloquy Glossary: O, what a rogue and peasant slave am I! (2.2.555-612)
A kitchen helper, either man or woman but usually a woman. It was a term used to show contempt. One should note that in the second quarto, scullion was actually "stallyon", which means a male whore. Scholars are still undecided on the matter, but scullion is the more generally accepted of the two.