occidens. occasus. To lie or be situate toward the west, ad occidentem (solem) vergere; occidentem solem spectare: the west = western regions, regio ad occidentem vergens; obeuntis solis partes Cic., Somn. Scip., 6); occidens (Vid: Tac., Ann., 6, 46, 3: ☞ vespertina regio is poetical): the west wind, veniens ab obeuntis solis partibus, or veniens ab occidente, ventus (ventus occidentalis, op. Gell., 2, 22, § 22, not classical); zephyrus; Favonius (☞ Caurus is the northwest wind): flans ab occasu ventus (Plin.): Rain from the west, ab occasu veniens imber (Verg.).