This is the 283rd most frequent Czech word.
klubu
"Klubu" is the genitive or dative singular, or accusative plural form of "klub," meaning "club" (a group or organization).
The word 'klubu' is in the genitive case, used as the object of motion towards.
Jdeme do klubu večer.
We are going to the club in the evening.
Here, 'klubu' is in the genitive case, indicating possession ('members of the club').
Členové klubu se sešli na schůzi.
The members of the club met at the meeting.
In this case, 'klubu' is in the genitive case, describing location (the building belonging to the club).