Well, that’s one way to lookup definitions on Google. They also maintain a multilingual dictionary search page at google.com/dictionary where you can not only look for word meaning but also hear the audio pronunciation of a word or translate it into different languages.
The service initially launched as part of Google Translate but is now a separate service with an easy to remember address. Definitely worth bookmarking.
And it may not be long before Google delinks the answers.com links from their search page and start linking to their own dictionary pages since the two have a lot in common. Thanks Abhishek.