This is the 7869th most frequent Polish word.
mikołowskiej
"Mikołowskiej" is the genitive or locative form of "Mikołowska," which refers to something related to Mikołów, a town in Poland, often used in names of streets or locations.
Here, 'Mikołowskiej' is the locative form of the proper name 'Mikołowska', referring to the street's name.
Mieszkam przy ulicy Mikołowskiej.
I live on Mikołowska Street.
In this example, 'Mikołowskiej' is in the genitive case, indicating possession or association with the street.
Sklep znajduje się na rogu ulicy Mikołowskiej i Głównej.
The shop is located at the corner of Mikołowska and Główna Streets.
Here, 'Mikołowskiej' is in the ablative case, denoting the origin or point of departure from the street.