Definition that contains mackenzie river
- mackenzie Canadian explorer (born in England) who explored the Mackenzie River and who was first to cross North America by land north of Mexico (1764-1820)
- great slave lake a lake in the Northwest Territories in northwestern Canada; drained by the Mackenzie River
- sir alexander mackenzie Canadian explorer (born in England) who explored the Mackenzie River and who was first to cross North America by land north of Mexico (1764-1820)