Indicates that an action or event occurs three times; three occurrences.
このボタンを三回押すと電源が入ります。
Press this button three times to turn the power on.
彼は三回試験を受けてやっと合格した。
He took the exam three times and finally passed.
そのレシピは三回に分けて混ぜるといい。
It's good to mix the recipe in three batches.