| Noun | 1. | Northwest Territories - a large territory in northwestern Canada; part is now NunavutCanada - a nation in northern North America; the French were the first Europeans to settle in mainland Canada; "the border between the United States and Canada is the longest unguarded border in the world" Yellowknife - a town in the Northwest Territories in northern Canada on the Great Slave Lake Great Slave Lake - a lake in the Northwest Territories in northwestern Canada; drained by the Mackenzie River |