This is the 243rd most frequent Croatian word.
kluba
"Kluba" in Croatian means "of the club" (genitive singular form of "klub").
Here, 'kluba' is the genitive singular form of 'klub' used with the preposition 'do' indicating movement towards a location.
Idem do kluba na ćošku.
I'm going to the club at the corner.
In this sentence, 'kluba' is the genitive singular form of 'klub', describing possession or association.
Vrata kluba su zaključana.
The doors of the club are locked.
Here, 'kluba' is again the genitive singular of 'klub', used with the preposition 'ispred' to indicate position relative to the club.