- wild or drunken festivity or revelry, especially involving sex with multiple participants.
- any actions or proceedings marked by unbridled indulgence of passions: an orgy of killing.
- (in ancient Greece) esoteric religious rituals, especially in the worship of Demeter or Dionysus, characterized in later times by wild dancing, singing, and drinking.
- a boisterous, rowdy party.
- a wild gathering marked by promiscuous sexual activity, excessive drinking, etc
- an act of immoderate or frenzied indulgence
- secret religious rites of Dionysus, Bacchus, etc, marked by drinking, dancing, and songs
