Break (someone)'s back
Translation of "break (someone)'s back" into Russian
break (someone)'s back
сломать (кому-то) спину
The new project almost broke her back with all the extra work.
Новый проект почти сломал ей спину из-за всей дополнительной работы.
Definitions
To make someone work extremely hard, often to the point of exhaustion or great difficulty; to put a lot of effort into accomplishing something.