I recommend taking a look at http://www.wordnik.com http://www.wordnik.com. It's a startup launched by an experienced dictionary editor (sorry, Erin, I don't kn

I recommend taking a look at http://www.wordnik.com http://www.wordnik.com. It's a startup launched by an experienced dictionary editor (sorry, Erin, I don't know what else to refer to the profession as:)) and they have an API as well.