Yes, it does. Plus Chambers thesaurus, ODE & Collins.
I have also added web links to Wikipedia, Longman, MacMillan, Urban dictionary, Wiktionary, Wordnet and others.
You can do anagrams on the major dictionaries, plus a powerful search function and searchable lists of many different word categories (but without definitions) - useful for geography, names and the like.
All at a price, of course.