This is the 11362nd most frequent Turkish word.
eleştirisini
"Eleştirisini" means "his/her/its criticism" or "the criticism of him/her/it."
In this sentence, "eleştirisini" is used to mean "his/her critique," referring to the critique made by the author towards their own book.
Yazarın kitabına yaptığı eleştirisini okudum.
I read the author's critique of his book.
Here, "eleştirisini" refers to the written critique of the movie that was published in the magazine.
Filmin eleştirisini dergide yayımladılar.
They published the critique of the movie in the magazine.
In this example, "eleştirisini" signifies the criticisms directed toward a project, shared for feedback within a team setting.