to break one's back
01
죽어라 애쓰다, 허리가 휘도록 일하다
to work as hard as one can to achieve a particular result
idiom
informal
예시들
If they want to succeed, they will have to break their back to prepare for the competition; it wo n't be easy.
그는 대학 등록금을 모으려고 여름 내내 허리가 휘도록 일했다.



























