Börjigin is a historical term associated with the lineage of Genghis Khan, the founder of the Mongol Empire. It refers to the clan or family name from which Genghis Khan descended, specifically the Borjigin clan. This clan played a significant role in the early formation of Mongolian society and politics. The Borjigin clan is known for its noble heritage and connection to the Mongolian steppe. Members of this clan were influential in the unification of various Mongolian tribes, which ultimately led to the establishment of one of the largest empires in history under Genghis Khan's leadership.