This is the 6211th most frequent Polish word.
barcinie
"Barcinie" does not have a direct meaning in Polish; it may refer to a place name (e.g., Barcin) in Poland.
Here, 'Barcinie' is used as the locative case of 'Barcin', indicating the location where the grandmother resides.
W Barcinie mieszka moja babcia.
My grandmother lives in Barcinie.
'Barcinie' is used as the locative case of 'Barcin', asking if someone has visited the location.
Czy byłeś kiedyś w Barcinie?
Have you ever been to Barcinie?
In this sentence, 'Barcinie' again appears in the locative case, referring to the context where the events in the story occurred.