Thayer's Greek Lexicon

 1. a revel, carousal
  1) a nocturnal and riotous procession of half drunken and
frolicsome fellows who after supper parade through the streets
with torches and music in honour of Bacchus or some other
deity, and sing and play before houses of male and female
friends; hence used generally of feasts and drinking parties
that are protracted till late at night and indulge in revelry