Joló

Jolo (the provincial capital of Sulu, Philippines); Jolo (an island of Sulu, Philippines); Sulu (a province of the Philippines); Sulu Archipelago (an archipelago of the Philippines); Sultanate of Sulu

Borrowed from Tausug Sulug (“Sulu”), an older form of Sūg (“Sulu”), possibly from Tausug sulug, an older form of sūg (“sea current”). Compare Maranao Solog (“Sulu; Jolo”).