This is the 12423rd most frequent Polish word.
młodzieżowym
"Youth-related" or "youthful."
Here, 'młodzieżowy' is used as an adjective to describe the character (youth-oriented) of a sports club.
Ten klub sportowy jest przeznaczony dla młodzieży i ma charakter młodzieżowy.
This sports club is intended for youth and has a youth-oriented character.
In this context, 'młodzieżowy' describes a series that targets a young audience, indicating its thematic focus.
Czy widziałeś nowy młodzieżowy serial na Netflix?
Have you seen the new youth-oriented series on Netflix?
Here, 'młodzieżowy' modifies 'meble' (furniture) to signify that the furniture is designed with young people's preferences in mind.