a member of a Native American people from the northern central region of the US 苏人(美国中北部地区的美洲土著) CultureThe Sioux are also called the Dakota people. They were originally an association of seven groups on the Great Plains where, led by Sitting Bull and Crazy Horse, they fought the US Army. They defeated General George Custer at the Battle of Little Bighorn but lost their final battle at Wounded Knee.Word OriginNorth American French, from Nadouessioux from Ojibwa (Ottawa dialect) nātowēssiwak, by substitution of the French plural ending -x for the Ojibwa plural -ak.