A male given name of historical usage, most famously borne by the Mongol ruler Chagatai Khan (1183–1242), second son of Genghis Khan and first khan of the Chagatai Khanate, a medieval Mongol and later Turkicized khanate of Central Asia (divided after the 14th century).

Synonym of Chagatai (“extinct literary language”)

Of or relating to the Chagatai people or language.