break your back doing something/to do something(redirected from break your back doing something)
break one's back
(to do something) Go to break one's neck (to do something).
break your back
If you break your back to do something, you work extremely hard to try to do it. When you're breaking your back to make a business work, it's going to cut into your time with family. `I had been travelling all over the country, breaking my back just to get a job,' she says.