This is the 4523rd most frequent Russian word.
выпустил
"Released" or "let out."
The word 'выпустил' here is used to express the action of publishing or releasing a book.
Он выпустил книгу о путешествиях.
He released a book about travel.
The word 'выпустила' in this sentence means to let or release something, in this case a bird from a cage.
Она выпустила птицу из клетки.
She let the bird out of the cage.
In this usage, 'выпустил' is used to describe the action of producing or manufacturing something, such as a new car model.