This is the 356th most frequent Serbian word.
наших
"Наших" means "of ours" or "of our" in English.
The word 'наших' is used here as a possessive adjective, denoting 'our' in the genitive plural, modifying 'favorite places'.
Посетили смо једно од наших најомиљенијих места.
We visited one of our favorite places.
In this sentence, 'наших' indicates possession ('our') and is in genitive plural because it matches the grammatical requirements of the noun 'ancestors' and the prepositional context provided by 'about'.
Причао је о једном од наших храбрих предака.
He talked about one of our brave ancestors.
Here, 'наших' serves as the possessive adjective 'our' in the genitive plural to describe 'neighbors' as those belonging to 'us'.