Bacchanalia
     n 1: an orgiastic festival in ancient Greece in honor of Dionysus
          (= Bacchus) [syn: {Dionysia}]
     2: a wild gathering involving excessive drinking and
        promiscuity [syn: {orgy}, {debauch}, {debauchery}, {saturnalia},
         {riot}, {bacchanal}, {drunken revelry}]
Source: WordNet® 2.0