Rated 5 out of 5 stars

Another possibility is to use Onelook.com. This looks up words in over 1000 dictionaries and encyclopedias. If you don't know the word describe it here.

http://www.onelook.com/reverse-dictionary.shtml

This review is for a previous version of the add-on (1.1). 

Rated 5 out of 5 stars

This very useful and quite innovative, thanks a lot!

This review is for a previous version of the add-on (1.0). 

Rated 5 out of 5 stars

I found it very easy to use and helpful.

This review is for a previous version of the add-on (1.0). 

Rated 5 out of 5 stars

Quiet Handy.. Thanks !!!

This review is for a previous version of the add-on (1.0).