This is the 593rd most frequent Hebrew word.
יצאו
"יצאו" means "they went out" or "they exited."
Here, יצאו is employed to indicate something becoming available or being launched, in this context, books.
הספרים החדשים יצאו לחנויות בשבוע שעבר.
The new books were released to stores last week.
In this sentence, יצאו is used to describe leaving a particular place to a new one, specifically going outside to play.
הילדים יצאו לשחק בגינה אחרי ארוחת הצהריים.
The children went out to play in the garden after lunch.
In this example, יצאו reflects the meaning of things being invalidated or no longer functional.