Okanogan

geographical name
Oka·​nog·​an | \ ˌō-kə-ˈnä-gən How to pronounce Okanogan (audio) \
variants: or in Canada Okanagan

Definition of Okanogan

river 300 miles (483 kilometers) long in U.S. and Canada flowing from Okanagan Lake (in southeastern British Columbia) into the Columbia River in northeastern Washington