How can I add an Old English dictionary to Dictionary? Is there a way to add an Old English dictionary to the Dictionary app?  I would like to three-finger-tap a word that's Old English and have it translate it for me.

For pure adventure I want to read Beowulf in its original Old English form.  I was all excited to use Dictionary to help me through each word, and was kinda surprised when it didn't know practically any word in it at all.

If I open Dictionary and search a word (such as HWÆT), it does actually return some related words because their origin is the Old English word.

Any ideas?
Adding dictionaries is possible.  Finding the one you want may not be.  See

http://clasquin-johnson.co.za/michel/mac-os-x-dictionaries/index.html

For info on creating dictionaries for dictionary.app, see

How can I create a dictionary for Mac OS X?

How to add wiktionary as a source to the default dictionary.app?