Lewis & Short

Orgĭa, ōrum, n., = Ὄργια, a nocturnal festival in honor of Bacchus, accompanied by wild bacchanalian cries, the feast or orgies of Bacchus.

  1. I. Lit., Verg. A. 4, 303; Ov. M. 11, 93; Verg. G. 4, 521.
    1. B. Transf., in gen., secret frantic revels, orgies, Juv. 2, 91; Stat. S. 5, 5, 4.
  2. II. Trop.: Itala per Graios Orgia ferre choros, the mysteries of love in the Latin tongue, Prop. 4, 1, 4: naturae, secrets, mysteries, Col. 10, 217.