The ruler of a Muslim country (especially of the former Ottoman Empire) WordNet 3.0 & Open English WordNet

Sultan is a position with several historical meanings. Wikipedia

Islamic title of authority. Wikipedia Disambiguation

Noble title with several historical meanings Wikidata

Short for Grand Turk Island, the largest island in the Turks and Caicos Islands. Wiktionary

An island in the Turks and Caicos Islands. Wiktionary (translation)

A hereditary ruler in various Muslim states (sultanate), varying from petty principalities (as in Indonesia and in Yemen), often vassal of a greater ruler, to independent realms, such as Oman, Brunei, or an empire such as the Turkish Ottoman Empire. Wiktionary

Ruler. Wiktionary (translation)