başkan

Etymology
Apparently combines the root  and the (originally Mongol, widely adopted) polyvalent title.

Noun

 * 1) Title of the governor of the Gagauz-Yeri Autonomous Region (since 19 June 1995) within independent Moldova.

Etymology
Learned borrowing from, itself from.

Noun

 * 1) mayor
 * 2) chairman
 * 3) (government) president