I have recently migrated to Firefox 4 away from Chrome (Chrome's text highlighting is too annoying as I highlight while I read). One of the things I loved about Chrome was the fact that the address bar would do a google search unless it was a URL. As such, I am in the habit of typing into the address bar "define: menagerie".
Unfortunately, Firefox then gives the error
Firefox doesn't know how to open this address, because the protocol (define) isn't associated with any program.
Is there a way to modify Firefox's default address bar behaviour such that it handles this in a more Chrome-esque way? That is, I would like it to perform a search whenever it doesn't recognise the protocol.