This is the 1068th most frequent Turkish word.
kürt
"Kürt" means "Kurd," referring to a member of the Kurdish ethnic group.
Here, "Kürt" is used as an adjective describing Mehmet's ethnic background.
Mehmet bir Kürt şairidir.
Mehmet is a Kurdish poet.
In this sentence, "Kürt" modifies "kültürü" (culture), indicating the cultural heritage tied to the Kurdish people.
Kürt kültürü, çeşitli gelenekler ve müzikler içerir.
Kurdish culture includes various traditions and music.
"Kürt" is an adjective describing the friends as being of Kurdish ethnicity or cultural affiliation.