This is the 12266th most frequent Turkish word.
halısı
"Halısı" means "his/her/its carpet" or "the carpet of."
Here, 'halısı' indicates possession of the carpet by the homeowner ('ev sahibi'). The sentence describes an action taken due to the carpet being dirty.
Halısı kirlenen ev sahibi, yeni bir temizlik ürününü denedi.
The homeowner whose carpet got dirty tried a new cleaning product.
In this sentence, 'halısı' specifies the carpet belonging to the mosque in the village. It highlights the characteristics of the specific item.
Köydeki caminin halısı el dokumasıdır.
The carpet of the mosque in the village is handwoven.
The word 'halısı' here functions as the possessive form of 'halı' (carpet) referring specifically to the carpet that belongs to the room and is complemented by 'bu odanın' (this room's).