Google dictionary

I found a very good dictionary website from google. See the link below
http://www.google.com.au/dictionary

The good thing I can see it it provides descriptions of the word rather than definitions only. For instance, misnomer

descriptions
If you say that a word or name is a misnomer, you mean that it describes something incorrectly. Noun (countable) usu 'a' N in sing
    Herbal `tea' is something of a misnomer because these drinks contain no tea at all.

definitions
A misnomer is a term which suggests an interpretation that is known to be untrue. Such incorrect terms sometimes derived their names because of the form, action, or origin of the subject—becoming named popularly or widely referenced—long before their true natures were known.            

I love that.