Dictionaries
(listed alphabetically)


 Merriam-Webster Online

  http://m-w.com/home.htm

The Merriam-Webster Dictionary and Thesaurus, plus other features.

 Onelook

http://www.onelook.com 

An excellent site containing links to many dictionaries of all kinds, both general and specialized.

 Smiley and Acronym Dictionary by Gary Webb

http://www.itsg.u-net.com/smileys.htm

A dictionary of emoticons and acronyms for use in e-mail messages.

 Travlang's Translating Dictionaries

http://dictionaries.travlang.com/

Translating dictionary.  You can translate from Latin to English, for example. This should be a good site for translating foreign terms you encounter in your philosophy readings (when snobbish editors don't bother to provide translations!

Web of Online Dictionaries

http://www.yourdictionary.com/

Site containing mostly language dictionaries for translating words (everything from Afrikaans to Yiddish!).  Also contains thesauri and specialized English dictionaries.  Extremely useful.