User:TestPilot

How to use:
1) Press Shift
2) Move mouse pointer just a bit, still holding it over selected word.
3) Wait half a second.

The other way, moving mouse first and then pressing Shift will not work, to make sure add-on won't interfere, when user decided to type some text..

--or--

1. Highlight any word or idiom with your mouse.
2. Move mouse pointer just a bit, still holding it over selected word.
3. Wait half a second.

Waiting is to ensure non aggressive approach for definition frame appearance, in the meantime still preventing multiple mouse clicks.