break (someone)'s back

Translations
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.
Words
break

verb
сломать
someone

pronoun
кого-либо
back

noun
спину