Definitions
1.NounA secret rite or ceremony, typically involving riotous and dissolute behavior, including dancing, drunkenness and indiscriminate sexual activity, undertaken in honor of various pagan gods or goddesses (such as Attis, Bacchus, Ceres, Dionysus, Osiris, etc).
2.NounA gathering of people to engage in group sex.
3.NounAn instance or period of excessive indulgence in a specified activity; spree.