The Burji Mamluks or Circassian Mamluks, sometimes referred to as the Burji dynasty, were the rulers of the Mamluk Sultanate of Egypt from 1382 until 1517. As with the preceding Bahri Mamluks, the members of the Burji Mamluk ruling class were purchased as slaves (mamluks) and manumitted, with the most powerful among them taking the role of sultan in Cairo. During this period, the ruling Mamluks were generally of Circassian origin, drawn from the Christian population of the northern Caucasus. The name Burji, meaning 'of the tower', refers to the traditional residence of these Mamluks in the barracks of the Citadel of Cairo.