flagellation

US /ˌflædʒ.əˈleɪ.ʃən/
UK /ˌflædʒ.əˈleɪ.ʃən/
1.

sự đánh roi

the practice of whipping yourself or someone else, especially as a religious practice, for punishment, or for sexual pleasure:

:
Ancient monks advocated flagellation as the path to salvation.