This is the 6319th most frequent Polish word.
bośni
"Bośni" is not a standalone word in Polish; it might refer to forms associated with "Bośnia," meaning "Bosnia" in English (a country in Southeastern Europe). Context is needed for clarification.
In this sentence, 'Bośni' is used as a noun in the genitive case to refer to the country Bosnia.
Widziałem w telewizji piękne krajobrazy Bośni.
I saw beautiful landscapes of Bosnia on television.
Here, 'Bośni' is used in the genitive case indicating origin, showing where the stories come from.
Historie z Bośni zawsze mnie ciekawiły.
Stories from Bosnia have always interested me.
In this example, 'Bośni' is used in the locative case, indicating the place being referred to.