This is the 7970th most frequent Russian word.
комиссарова
"Комиссарова" is a Russian surname and does not have a standalone meaning in English.
Here 'комиссарова' is used as a proper noun, likely as the last name of a person, indicating identity.
Я встретил комиссарова на вокзале.
I met Komissarova at the station.
In this sentence, 'комиссарова' is possessive, indicating ownership of the book by Komissarov.
Книга комиссарова очень интересна.
Komissarov's book is very interesting.
Here, 'комиссарова' serves as a subject in the narrative, specifically naming the individual central to the drama's plot.