Bulletin board system (BBS),
Definition of Bulletin board system (BBS):
Computerized information disseminating or message-passing source. Similar to a physical message board (notice board), it allows users to leave messages for others to read or pass on. In pre-Internet days, there were some 15,000 BBS on practically every conceivable topic. Now largely replaced by websites such as Usenet.
Meaning of Bulletin board system (BBS) & Bulletin board system (BBS) Definition