This is the 10475th most frequent Polish word.
częstochowskiego
The word "częstochowskiego" is the genitive singular or accusative singular masculine form of an adjective meaning "of/from Częstochowa," a city in Poland.
The word 'częstochowskiego' is used as an adjective derived from the proper noun 'Częstochowa,' describing something related to or belonging to Częstochowa, in this case, a sanctuary.
W zeszłym roku odwiedziliśmy sanktuarium częstochowskiego.
Last year, we visited the Częstochowa sanctuary.
Here, 'częstochowskiego' indicates that the theater is situated in or associated with Częstochowa.
Miałem okazję porozmawiać z artystą częstochowskiego teatru.
I had the chance to talk with an artist from the Częstochowa theater.
The word 'częstochowskiego' describes the hymn as relating to or originating from Częstochowa.