I.to make clear, fair, or serene, to clear up (poet.; syn. tranquillo).
I. Lit.: “vultu, quo caelum tempestatesque serenat (Juppiter),” Verg. A. 1, 255: “axem,” Sil. 12, 637: “Olympum,” id. 12, 665: “glauca terga aquae, Claud. de Apono, 36: domum largo igne,” to ligth up, Stat. Achill. 1, 120.—Absol.: luce serenanti, in bright, clear daylight, * Cic. poët. Div. 1, 11, 18.—