derebeyEtymologyBorrowed from Turkish derebeyi, from dere (“creek”) + bey (“bey, lord”).derebey means A feudal lord in the Ottoman Empire. Lexicurio rates it Rare gem — a strength score of 82 out of 100.nounA feudal lord in the Ottoman Empire.“A separate institution in Rize from the derebeylik was the great Tuzcuoglu family which eventually was to precipitate the crushing of the derebeys as semi-autonomous local powers.”