a river in the S central US, flowing east from N Texas through Arkansas into the Mississippi in Louisiana. Length: 1639 km (1018 miles)
2.
a river in the northern US, flowing north as the border between North Dakota and Minnesota and into Lake Winnipeg, Canada. Length: 515 km (320 miles)
3.
a river in SE Asia, rising in SW China in Yunnan province and flowing southeast across N Vietnam to the Gulf of Tongkin: the chief river of N Vietnam, with an extensive delta. Length: 500 km (310 miles)
Vietnamese name: Song Koi
Red River in American English
1.
river flowing southeast along the Tex.-Okla. border, through SW Ark. & central La. into the Mississippi: 1,018 mi (1,638 km)
2.
river flowing north along the N.Dak.-Minn. border into Lake Winnipeg in Manitoba, Canada: c. 310 mi (499 km)
: in full Red River of the North
3.
river in SE Asia, flowing from Yunnan province, China, southeast across Vietnam,into the Gulf of Tonkin: c. 500 mi (805 km)