Free online English dictionary, thesaurus and reference guide, crossword puzzles and other word games, online translator and Word of the Day.

http://dictionary.reference.com

Easy to use online dictionary service - look ups update as search keyword. Dictionaries of English, computers, finance, japanese, chinese and esperanto. Roget's thesaurus. crossword and scrabble solvers.

http://www.itanda.com

Find library and reference resources, also including top dictionaries, encyclopedias, newspapers, maps, quotations and much more.

http://www.libraryspot.com

Merriam-Webster provides a free online dictionary, thesaurus, audio pronunciations, word of the day, word games, and other English language resources.

http://www.m-w.com

Where words are defined as pictures, for learning the exact names of objects. Different from a dictionary or from encyclopedia because the images replace the words.

http://www.infovisual.info/