This is the 319th most frequent Slovenian word.
bolnišnici
The Slovenian word "bolnišnici" means "hospital" (dative or locative singular form).
The word 'bolnišnici' here is used in the locative case, indicating the place where something occurs (in this case, 'in a hospital') after the preposition 'v'.
Ste že bili kdaj v bolnišnici?
Have you ever been in a hospital?
'Bolnišnici' appears again in the locative case, providing the same function and meaning, referring to the location of the action.
Obiskala sem te v bolnišnici, ko si bil bolan.
I visited you in the hospital when you were sick.
Once more, 'bolnišnici' is in the locative case after 'v', describing the place associated with the subject.