Could you please follow this up with Tara as I see you have already spoken to her, and she can take it up with Tech if necessary. However, in general I think script and iframe are not allowed as they can potentially be used to inject malicious code, but maybe there is another solution. Hope it helps.
Thanks for the links, Rajesh! The Vocabahead is going to be helpful for me tomorrow. We are discussing how to have a running vocab list and where to post it for my students. I think this is a good solution. Lots of good stuff here!