As far as I can tell, Coriolis is certainly not out of business - at least, they're still publishing books. Amazon.co.uk has the Perl Black Book new at £41.99
here.
As far as a Perl glossary/dictionary goes, I think it's a fantastic idea. I'm relatively new to Perl myself, and although I have a lot of experience with other languages, some of the concepts could certainly have been explained much better.
I think the idea is certainly worthy of follow-up, and I'm pretty sure that there's plenty of people out there that'd be willing to help set something like that up.
--Foxcub