This is the 16701st most frequent Polish word.
wtorkowych
"Wtorkowych" means "Tuesday-related" or "of Tuesdays."
Here, 'wtorkowych' is an adjective in the genitive plural form, modifying 'zajęć' (classes), indicating that the classes took place on or are related to Tuesday.
Podczas wtorkowych zajęć omawialiśmy ważny temat.
During the Tuesday classes, we discussed an important topic.
In this context, 'wtorkowych' describes 'dźwięków' (sounds), specifying that the sounds were associated with Tuesday or occurred on that day.
Czy pamiętasz te wtorkowych dźwięków w parku?
Do you remember those Tuesday sounds in the park?
Here, 'wtorkowych' qualifies 'wydarzeń' (events), implying events that took place on Tuesday, and is in the genitive plural form.