( informal ) to hit sb very hard several times and hurt them very much
BEAT / KNOCK THE (LIVING) DAYLIGHTS OUT OF SB
Meaning of BEAT / KNOCK THE (LIVING) DAYLIGHTS OUT OF SB in English
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005