I noticed that a lot of the students in this class have macs. WooHoo!!! Go Mac!!! Anyway, I don't know if you have tapped the vast resources that is the all powerful widget, but they are great. And they just so happen to make an Oxford English Dictionary widget. Which means that you can always have the Oxford English Dictionary right at your fingertips. I use it constantly. Here is the link:

http://www.apple.com/downloads/dashboard/reference/oxfordenglish.html [1]

if you don't have mac, you can still get widgets, maybe even this one. I only found the link for the mac version.

For some reason, the link button won't work, so you will just have to copy and paste it. Sorry.