bulletin board bulletin board /ˈbʊlɪtɪn bɔrd/

noun

1. A board that hangs on a wall; displays announcements  ( bulletin board , notice board )
   a board that hangs on a wall; displays announcements
    Check the notice board for updates and announcements
   Check the notice board for updates and announcements
   
   
2. (computing) a computer that is running software that allows users to leave messages and access information of general interest  ( bbs , bulletin board , bulletin board system , electronic bulletin board )
   (computing) a computer that is running software that allows users to leave messages and access information of general interest