The most famous English language dictionary of all time. You can also link from this site to the Oxford Historical Thesaurus to see alternate words and their historical use.
In this online book Shakespeare's use of sexual language, imagery and erotic themes is extensive, varied, and although this is necessarily hard to establish, probably innovative at times. This glossary provides a first-hand guide to Shakespeare's sexual language, some of which is notoriously difficult to unravel and whose roots go back into earlier literature.