Merriam-Webster Dictionary-http://www.m-w.com/netdict.htm Dictionary, thesaurus, and word games.
Word Central-http://www.wordcentral.com/ Student dictionary plus English experiements and daily buzzwords.
Bartleby.com-http://www.bartleby.com/ Dictionary, thesaurus, famous quotations and more.
Picture Dictionary-http://www.enchantedlearning.com/Dictionary.html Picture dictionary with versions in 6 other languages for language learning.
