This is the 59th most frequent Polish word.
raz
"Raz" in Polish means "once" or "one time."
Here, 'raz' means 'once', referring to a single occurrence in the past.
Byłem tam raz, ale nie udało mi się zobaczyć wszystkiego.
I was there once, but I couldn't see everything.
In this sentence, 'raz' means 'time', referring to an individual occurrence or attempt.
Jeszcze jeden raz spróbuję rozwiązać to zadanie.
I will try to solve this task one more time.
Here, 'raz' is used as 'one' in counting to lead into an action or event.