A computer used to store messages; users access the bulletin board via a modem and post and retrieve messages much like a paper bulletin board
A computer (or part of one) which maintains a list of messages so that people can call up with their computers and either post a message or read the ones that others have posted.
service offered by a computer operator that enables individuals to access a central computer file to read an post public messages
an old form of internet communication being phased out in favor of web pages