What do you call the little clippy circle inside a CD case that grips the hole in the middle of the CD?
Does it have a name?
The hub?
A “push hub,” to be precise.
I looked up several patents on compact disks and storage cases:
6,464,073 rosette
6,419,084 hub
6,036,008 hub
5,775,659 spindle
5,118,228 hub
The consensus looks to be ‘hub’.
Funny; I had always heard these CD cases called “jewel cases” and assumed that the “hub” was the “jewel”. It’s a sort of radiant circle thing, after all.
It’s difficult to google for why cd cases are called “jewel cases” 
Ask Jeeves produced two sites which asked the question, but no answers were forthcoming.
So I’d like to add a corollary question: Why “jewel cases”?
Partly because of their passing resemblance to an actual jewel case, in that they’re a hinged box designed to protect the contents from dust and scratches – but I suspect mostly because it sounds prestigous.
I’ve always called it a spindle.
Now there should be 3 sites. Try it again. 
Thanks for your replies. I think I’ll go with hub, or push hub.
I asked because no-one seemed to know, yet it’s a device that is manufactured in the billions and so well known to millions…
…except my mother. The other day I had to show her how they worked. She had almost managed to get all the way to the year 2005 without ever removing a compact disc from its case. But then I had to admit I had no idea what they were called.
I always called it “That little fucking thing that always breaks off, rendering the jewel case virtually useless”