Ceyhun

From Arabic جيحون (Jayḥūn), from Hebrew גִּיחוֹן (Giḥon), which in the Old Testament is a river originating in the Garden of Eden. The river's name itself is derived from Hebrew גִּיחַ (giyaḥ) meaning "to burst forth" [1]. In Islamic tradition it is identified with the Amu Darya, a river in central Asia.