This is the 1671st most frequent Turkish word.
çiftin
"Çiftin" means "of the couple" in English.
In this usage, 'çiftin' shows ownership of 'çalışmaları' (efforts) by the couple.
Çiftin çalışmaları ödül aldı.
The couple's efforts received an award.
In this sentence, 'çiftin' is the genitive form of 'çift' (which means couple), indicating possession.
Çiftin bahçesi çok güzel.
The couple's garden is very beautiful.
Here, 'çiftin' again shows possession of 'görüşleri' (opinions) by the couple.