Free String Dictionary (Nouns)

I am looking for a free (downloadable) dictionary of nou开发者_开发知识库ns to use as an actual word generator - similar but not the same as captcha's.

Does anyone know if anything like this is available?

Thanks,

Kyle

• Kevin's Word List Page includes a part of speech database.
• Wiktionary
• The 1913 edition of Webster's Dictionary, now in the public domain