This is the 6265th most frequent Polish word.
bibliotece
The Polish word "bibliotece" means "library" in the locative case.
Here, 'bibliotece' is used in the locative case to indicate the location where the action took place.
Uczyłem się w bibliotece.
I studied in the library.
In this sentence, 'bibliotece' again is in the locative case, specifying the place of Mary's work activity.
Marysia pracuje w bibliotece.
Mary works in the library.
The word 'bibliotece' is used in the locative case to show the venue of the meeting.