Now you can move your mouse pointer to the word that you need to know the meaning in firefox web browser and get the meening instantly. You only have to install the plugin to firefox.
Download the plugin from here. (Just save it to your hard drive)
Open it using firefox browser. (Just use the file menu)
Restart the browser when the installation finish.
Now you can have meaning of any english word in your mouse pointer as follows...
~ Vidula Hasaranga - විදුල හසරංග ~