If you need to know the definition of a word, polyglot for example, you can type "define:polyglot" into Google, and it will do its darndest to provide an answer.

But the almighty Google is still below par when compared with sites specifically designed to provide word definitions.

For example, i googled "define:idiot" (don't ask... i just wanted to see if it listed anyone i know) and the modal answer was:

Definitions of idiot on the Web

  A member of a large and powerful tribe whose influence in human affairs has always been dominant and controlling. 

[from http://www.geocities.com/vasudevanvrv/deftdef2.htm and I think originally from Ambrose Bierce's seminal work of satire, 'The Devil's Dictionary']

Satire has its place. But something here is definitely broken.