Note 96 — LETTER I.
Reading edition
Busbecq’s explanation is correct. The word may possibly be a corruption of the Latin signum. It is now applied to the district which was formerly governed by a Sanjak-bey, i.e., Lord of the standard. Busbecq writes the word Singiaccus, Von Hammer uses the form Sandjak, while Creasy prefers Sanjak.