Meaning of POPUP in English

v. 1. or bob up To appear suddenly or unexpectedly; show up; come out. Just when the coach thought he had everything under control, a new problem bobbed up. After no one had heard from him for years, John popped up in town again. 2. To hit a pop fly in baseball. Jim popped the pitch up.

American idioms English vocabulary.      Английский словарь американских идиом.