IMHO it's more important that people know they're talking about the same section in the song than to find out whose definition is correct. As for Teenage Jail, "refrain", "bridge" and "chorus" are all fine by me. Personally I'd prefer the term chorus, because it appears right after the verses - although with no vocals the second time. As far as I know, the "bridge" usually comes later in the song and comes after two verses and two choruses. But I don't care what it's called.