For those on other OSes, there are similar edict-integrating dictionaries.
I use gjiten on Linux and Mayjay on OS X.
And if I'm on the web, I either use Jim Breen's server or, more commonly these days, I visit
http://jisho.org/ which is also my #1 spot for looking up kanji by radical (it has a great interface, give it a try!)
I'm extra glad I found jisho.org, because I only came across it while researching how to build something very similar. Saved me a lot of work!