Dictionary look up. Fast, light, open source (GPL) tool that define (using Wiktionary) words for you without need to open new tabs or extra windows.

Definition (from Wiktionary) of any word, in any language right under your mouse pointer:)

How to use:
· You have to press Shift at the beginning.
· Move mouse pointer just a bit, still holding it over selected word.
· 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..

Requirements:

· Firefox 3.0 to 4.0*
· SeaMonkey 2.0b2 to 2.2a1pre

What's New in This Release: [ read full changelog ]

· Thesaurus added.
· GUI polished.
· Bug fixes.