This is the 6734th most frequent Polish word.
ejszyszkach
"Ejszyszkach" does not have a meaning in English; it is the locative form of "Ejszyszki," a town in Lithuania.
This sentence uses the word in locative case to indicate the location "in Ejszyszki".
Byliśmy w Ejszyszkach na wakacjach.
We were in Ejszyszki for vacation.
Here, the word appears in locative case referring to about the place named "Ejszyszki".
Opowiadano wiele historii o Ejszyszkach.
Many stories about Ejszyszki were told.
In this case, the locative case is used to denote knowledge or information related to "Ejszyszki".