Looking for free public domain datasets such as synonyms, thesaurus, names, etc.

Question:

Looking for free public domain datasets such as synonyms, thesaurus, names, etc.?

Any good source of free public domain datasets useful for web content.

Additional Details

6 months ago
I don't mean websites like thesaurus.com or dictionary.com I am looking for the raw data either in mysql format, or comma separated, or any other parseable format.

Best Answer - Chosen by Asker: 6 months ago
I don't mean websites like thesaurus.com or dictionary.com I am looking for the raw data either in mysql format, or comma separated, or any other parseable format.