I'm posting this because people seem to still be using the Dictionary Dashboard Widget. There is a MUCH better way (in browsers, mail, apple apps etc) Here's what you do: 1. Open up the dictionary app in Applications (note DO NOT move it to another (nested) folder - it needs to be in the Applications folder only) 2. Go to preferences and make sure "Open Dictionary panel" is checked 3. Close the app. 4. Now hold down ctrl-apple and hit D. Keep the ctrl-apple held down and then move your mouse over a certain word like: improvement 5. Voila - one of the best thing ever! See attachments for this working!