noun (n)

• any act of immoderate indulgence(noun.act)

  Example:
  An orgy of shopping.
  

  Synonym:
  binge, splurge
  

  source: wordnet30
• secret rite in the cults of ancient Greek or Roman deities involving singing and dancing and drinking and sexual activity(noun.act)

  source: wordnet30
• a wild gathering involving excessive drinking and promiscuity(noun.act)

  Synonym:
  bacchanal, bacchanalia, debauch, debauchery, drunken revelry, riot, saturnalia
  

  source: wordnet30
• A frantic revel; drunken revelry. See Orgies(noun)

  source: webster1913