Yukon Territory yu·kon·ter·ritory uncommon noun 1. a territory in northwestern Canada; site of the Klondike gold rush in the 1890s SynonymsYukonYukon Territory Related words Broader terms district Parts Canada Part of DawsonKlondikeWhitehorseLoganSt. Elias Range WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.