Excessive indulgence in a specified activity.
Originally, secret rites or ceremonies, typically involving riotous and dissolute behaviour, including dancing, drunkenness and indiscriminate sexual activity, undertaken in honour of various pagan gods or goddesses (such as Attis, Bacchus, Ceres, Dionysus, Osiris, etc).
A gathering of people to engage in group sex.
An instance of overfilling.
To fill beyond capacity or beyond what is appropriate.