Good addon Rated 4 out of 5 stars

The more powerful language add-on so far, but it would be good to add these two functions :
- ability to show wikitionary or wikipedia on double click (it's easier than a keyboard shortcut when you read something). The cons are that it can lead to unwanted apparitions, but maybe you can wait for mouse hover or mouse click inside the popup before loading the full wiki page.
- ability to drag the popup around the windows by clicking on the top 20px.

Out of that, it work great, the ability to browse the wiki directly from the popup is a great idea.

This review is for a previous version of the add-on (1.0.3).