[Ā mǔ hé, ㄚ ㄇㄨˇ ㄏㄜˊ, 阿姆河] Amu Darya, the biggest river of Central Asia, from Pamir to Aral sea, forming the boundary between Afghanistan and Tajikistan then flowing through Turkmenistan and Uzbekistan; formerly called Oxus by Greek and Western writers, and Gihon by medieval Islami #147,633[Add to Longdo]