This is the 4343rd most frequent Polish word.
gdańskim
"Of/from Gdańsk."
Here, 'gdańskim' relates to something associated with the city of Gdańsk, used as an adjective to describe 'bulwar' (boulevard).
Spędziliśmy wspaniały dzień na gdańskim bulwarze.
We spent a wonderful day on the boulevard in Gdańsk.
In this sentence, 'gdańskim' describes 'zamek' (castle), linking it to the city of Gdańsk.
Katedra w gdańskim zamek jest pod ochroną UNESCO.
The cathedral in the Gdańsk castle is under UNESCO protection.
The term 'gdańskim' characterizes 'sklep artystyczny' (art shop) as being located in Gdańsk.