Catshanghai

This is a dictionary with a clean interface, pictures, sounds, synonyms and there is even a hangman game. There is nothing new here, but it does it very well. It offers users the chance to attach pictures to words they view. You can find any piece of vocabulary by entering http://word.sc/ followed by the word you want to lookup. I think this will be very useful for EAL students trying to build up vocabulary in an engaging and user friendly way.