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Definition of Mackenzie
1. Noun. 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).
2. Noun. A Canadian river; flows into the Beaufort Sea.
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1. Noun. 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).