This is the 930th most frequent Armenian word.
ո
The Armenian word "ո" is a letter in the Armenian alphabet, representing the "vo" sound.
In this sentence, "ո" is used as part of the word "ո՞վ" which means "who" as an interrogative pronoun.
Ո՞վ է նա։
Who is he/she?
Here, "ո" is part of the word "ոստիկան" which relates to the police ("police" in Armenian).
Սա այն օրվա մասին է, ոստիկանական գործիքներով զբաղվել էին։
This is about the day when activities with police tools were conducted.
In this sentence, "ո" is featured within the word "հյուրասիրություններ" which references hosting or sharing hospitality in Armenian.