dükleri

The term "dükleri" is the genitive plural form of "dük" in Turkish, which translates to "duke" in English. Therefore, "dükleri" literally means "of the dukes" or "the dukes' ". This grammatical form is used to indicate possession or belonging related to multiple dukes. For example, one might say "dükleri hazineleri" which translates to "the dukes' treasures".

In historical contexts, the use of "dükleri" would specifically refer to the possessions, titles, or lineage associated with a group of dukes. It is a purely grammatical construct within the Turkish language and does not denote a specific historical entity or group of people beyond the literal meaning of "of the dukes". Its usage is dependent on the surrounding sentence structure and context. The concept of dukes themselves originated in Roman times as military commanders and later evolved into hereditary nobility in many European feudal systems. The Turkish word "dük" is a loanword from European languages reflecting this historical influence.