a river in E Asia, rising in N North Korea and flowing southwest to Korea Bay, forming a large part of the border between North Korea and NE China. Length: 806 km (501 miles)
Yalu in American English
(ˈjɑˌlu)
river flowing from Jilin province, China, along the Manchurian-North Korean border into the Yellow Sea: c. 500 mi (805 km)