Wikilook Defines Words in Firefox Without Leaving Your Tab

Firefox is great on its own, but we love us an addon that makes it even more powerful. Wikilook fits the bill, making it a snap to look up definitions for unfamiliar words.

Sure, you can just google a term or head over to Wiktionary and key in a search, but Wikilook will do it for you without ever leaving your current page. It's dead simple to use: hold down shift and hover over a word, wait patiently for a second or two, and the definition appears right before your eyes.

Quick links are presented for the Wikipedia match and key terms in the definition itself are also linked for you, and yes - you can even shift-hover text in the definitions if there are words in them you don't understand.

It's a great little timesaver for a 32k download.