Yeah. Another name for them could be portals, but that's simplifying things a little... Basically, a wormhole is a kind of tunnel through spacetime. Well, the time part is theoretical - I've only ever managed to make one through space. It's a really complicated kind of magic where I'm from, though, because you have to make sure that it's safe to go through, and they're really unstable unless you're careful. They're rare for a reason.

[fuckin nerd]

Can I ask why you wanted to know?