new plugin request

Is it possible to make a dictionary plugin? All you would need is a text entry box - once the word is entered, then it could pop up the definition from some online dictionary like <!-- w --><a class="postlink" href="http://www.dictionary.com">www.dictionary.com</a><!-- w -->

I'm sure Yuri could whip something up, but check out "Dave's Search Bar" or something like that. It has tons of options like that for typing results.