Glossary

Greetings!

I have a site set up with several courses, each with their own glossary.
In each of these course glossaries, students can add entries.

I would like to have a Random Glossary Entry block on the front page that would pull entries from all of the course glossaries.

Is this possible?  If there is a way to create a (hidden) global glossary on the front page that automatically contained all of the courses entries, it could be done, but I can't figure that out.

I would greatly appreciate any suggestions!

Cheers!