1a Hist. the vast region north and west of Lake Superior, as known by the fur traders and explorers.
See also: Northwest (def. 1a) Northwest territory
1b the early administrative districts which later became Saskatchewan and Alberta.
See also: Northwest (def. 1b) N.W.T. (def. 1)
2a Hist. the unorganized extra-provincial districts of the North and Northwest prior to 1920.
2b from January 1, 1920, the division of northern Canada between the Yukon Territory and Hudson Bay, including Baffin Island and the islands in James Bay, Hudson Bay, Hudson Strait, and the Canadian Archipelago; the districts of Franklin, Keewatin, and Mackenzie.
See also: Northwest (def. 2) N.W.T. (def. 2)