bboard /bee'bord/ n. [contraction of `bulletin board'] 1. Any
   electronic bulletin board; esp. used of {BBS} systems running on
   personal micros, less frequently of a Usenet {newsgroup} (in fact, use
   of this term for a newsgroup generally marks one either as a {newbie}
   fresh in from the BBS world or as a real old-timer predating Usenet). 2.
   At CMU and other colleges with similar facilities, refers to campus-wide
   electronic bulletin boards. 3. The term `physical bboard' is sometimes
   used to refer to an old-fashioned, non-electronic cork-and-thumbtack
   memo board. At CMU, it refers to a particular one outside the CS Lounge.

   In either of senses 1 or 2, the term is usually prefixed by the name
   of the intended board (`the Moonlight Casino bboard' or `market
   bboard'); however, if the context is clear, the better-read bboards may
   be referred to by name alone, as in (at CMU) "Don't post for-sale ads on
   general".


Source: The Jargon File