This is the 10224th most frequent Polish word.
bydgoską
"Bydgoską" is the feminine singular accusative form of "bydgoski," meaning "of Bydgoszcz" (a city in Poland).
Here, 'bydgoską' is used as an adjective to describe the noun 'ulicą' (street); it suggests that the street belongs to or is related to Bydgoszcz.
Spacerowałem bydgoską ulicą.
I was walking the Bydgoszcz street.
In this sentence, 'bydgoską' describes the noun 'katedrę' (cathedral), indicating that this cathedral is associated with Bydgoszcz.
Zwiedziłem bydgoską katedrę.
I toured the Bydgoszcz cathedral.
Here, 'bydgoską' modifies the noun 'kuchnię' (cuisine), implying that the cuisine is typical of Bydgoszcz.