POP Meaning of POP in English 1. < language > A family of programming languages, POP-1 , POP-2 , POP-10 , Pop-11 , POP++ , POP-9X , POPLOG . 2. Post Office Protocol . See also pop , PoP . [ Jargon File ] (1996-02-18) FOLDOC computer English dictionary. Английский словарь по компьютерам FOLDOC. 2012