Google Offers Definition for Search Term • 08.18.09
As the headline reads, Google now has the option to define the term you were looking for…
If you type in a longer phrase, google won’t show [definition] but will in fact link to the definitions of the words it underlines.
This can be used for a variety of purposes. You can use it to speed up your definition searches, or for more complex tasks like keyword research. Resources like this can help you come up with related terms to include in your campaigns, as well as negative keywords for your payperclick (PPC) campaigns.
Try it out & let me know how you used it.