Good Gear Guide
In Pictures: 15 essential Chrome extensions for po...
Another indispensable, free Chrome extension from Google. After you install Google Dictionary, you can double-click on any word, and a full definition appears in a yellow bubble. Click the More link, and you’re taken to the Google Web definitions page for the word -- a comprehensive mashup of definitions and uses from all over the Web. You can also select a word and click the Dictionary icon to see the same content, but without being transported to the Web definitions page.
In Pictures: 15 essential Chrome extensions for power users