CongoyoudaoicibaDictYouDict[Congo 词源字典]
African nation, named for the river that runs through it, which is from a Bantu word meaning "mountains" (i.e., the river that flows from the mountains). As an adjective, Congoese is native English (1797) but has been supplanted by Congolese (1900), from French Congolais.[Congo etymology, Congo origin, 英语词源]