This is the 6261st most frequent Polish word.
białostocki
Relating to Białystok, a city in Poland.
Here, 'białostocki' serves as an adjective describing the origin of the cheese, meaning it is from Białystok, which is a city in Poland.
Kupiłem białostocki ser na targu.
I bought Białystok cheese at the market.
In this sentence, 'białostocki' indicates the location of the park, referring to it being situated in Białystok.
Ten białostocki park jest pełen pięknych kwiatów.
This park in Białystok is full of beautiful flowers.
The word 'białostockich' is used in its plural form and describes the buildings belonging or related to Białystok.