Meaning of BBS in English

/ ˌbiː ˌbiː ˈes; NAmE / noun

[ C , U ] ( computing ) bulletin board system (a system which allows a group of people to leave messages which the others in the group can read and reply to)

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.