A river of north-western North America, which rises in Yukon Territory, north-western Canada, and flows 3,020 km (1,870 miles) westwards through central Alaska to the Bering Sea.
Definition of Yukon in US English:
Yukon
proper nounˈyo͞okänˈjukɑn
A river in northwestern North America that rises in Yukon Territory in northwestern Canada and flows west for 1,870 miles (3,020 km) through central Alaska to the Bering Sea.