This is the 5662nd most frequent Polish word.
wolnej
"Wolnej" means "free" (genitive or dative singular feminine form) or "slow" (in some contexts).
Describes possession of free time, used in a genitive case.
Mam chwilę wolnej, możemy porozmawiać.
I have a free moment, we can talk.
Indicates available space, forming an adjective phrase in the genitive case.
Oto pokój wolnej przestrzeni.
Here is a room of free space.
Expresses the attribute of freedom, modifying a noun in a descriptive/genitive sense.