This is the 4199th most frequent Polish word.
czwartkowego
"Czwartkowego" means "Thursday's" or "of Thursday" in English.
The word 'czwartkowego' here refers to something associated with Thursday, specifically a cake.
Czy pamiętasz smak czwarcokowego ciasta?
Can you recall the taste of the Thursday cake?
The word 'czwartkowym' describes a meeting that took place on Thursday.
Na czwarcokowym spotkaniu omawialiśmy ważne tematy.
We discussed important matters at the Thursday meeting.
Here, 'czwartkowego' qualifies the football match, indicating it will occur on Thursday.