Ĕleuthĕrĭus: i, m., = Ἐλευθέριος (Liberator),I the surname of a god: Liber, Arn. 6, p. 207.—Hence, Ĕleuthĕrĭa, ōrum, n., the festival of Jupiter Eleutherius, feast of liberty, celebrated in honor of the victory at Plataea, Plaut. Pers. 1, 1, 29.