Phanar
/ˈfanɑː/(also Fener)
noun
1The area of Istanbul which became the chief Greek quarter after the Ottoman Conquest; the Greek official class under the Turks, through whom the affairs of the Christian population in the Ottoman Empire were largely administered.
2The seat of the Patriarch of Constantinople after the Ottoman conquest; the patriarch himself.
Origin
Mid 18th century; earliest use found in Philosophical Transactions of the Royal Society of London. Ultimately from modern Greek Φανάρι, lit. ‘lighthouse, lantern’ (goes to Turkish fener) from medieval Greek ϕανάριον + -άριον, extended form of -ιον, diminutive suffix); the area was named after a lighthouse on the Golden Horn.