Source : Free On-Line Dictionary of Computing

WaZOO
     
         Warp-zillion Opus-to-Opus.  {Fidonet}'s
        {session layer} {protocol}.  Although it mentions {Opus} (a
        specific {BBS} from the 1980s), WaZOO is the session protocol
        used for the Fidonet network.  Because WaZOO is much more
        efficient than other mechanisms (e.g., {FTP}), it is sometimes
        used for automated or batch communications in other parts of
        the {Internet}.
     
        {(ftp://ftp.psg.com/pub/fidonet/stds/fts-0006.txt)}.
     
        (1995-11-16)