I don't ever remember this being brought up and I think it sounds like something that would be fun to do. I often find myself saying "what does that mean?" or "how the heck did he come up with that"?
I'll start it off. Azrael has several meanings to me.
First of all I just thought it sounded cool (Az-ray-el).
Second it was the Gargamel's cat on the Smurfs and also a one-time cat of mine's name.
Thirdly, it was the name of the character that took over for Batman after Bane had broken Batman's back in the comics. Batman eventually took over several years later after tricking Azrael into taking his body armor off because the armor and Azrael were kind of cultivated by this cult. When he put the armor on, it brainwashed him into this 'supersoldier' mental state. His skills were far superior to Batman's so Batman had to get him to take the armor off to snap out of it. Feel free to call me a dork at this point!
Finally, I read somewhere the name means "avenging angel"