This is the 15182nd most frequent Turkish word.
sokağı
"Street" (possessive form: "of the street").
The word 'sokağı' refers to the accusative form of 'street', indicating it as the definite object in the sentence.
Arabayı sokağı temiz tutmak için burada park ettim.
I parked the car here to keep the street clean.
Here, 'sokağı' is used locatively and denotes you as crossing or moving past the street.
Benim evim bu sokağı geçtiğinizde sağda kalıyor.
My home is on the right when you pass this street.
In this case, 'sokağı' acts as the definite object of the action 'watched', referring specifically to the street.