First of all, this is a beautifully simple yet powerful plugin, so thanks!
I have a couple of feature requests/suggestions to deliver an even greater user experience. Of course you may justifiably say they are not within the scope of this specific plugin, so feel free to tell me so. :)
1. "more info": the tooltip is great for displaying short definitions - I know, that's the point. But I'd also like to be able to provide more info if they actually click on the link to the glossary page. Would there be a way of having the first paragraph of the page as the tooltip then provide more info below? That way if you do add too much text it wouldn't disable the tooltip, as it does now (rightly so - you cannot have a tooltip of 500 characters!)