Thesaurus

[boatman]

What's another word for thesaurus?

[Ginbottle]

treasury. For the dictioary definition; a storehouse of knowledge, especially of words, quotations, etc., a dictionary.

[sgs]

Wordfinder, wordbook or synonym dictionary are three definitions. For more on this go to article 1655

[potent]

Microsoft Bookshelf suggests "Lexicon,a vocabulary of terms used in connection with a particular subject"