have your back against the wall

US /hæv jʊər bæk əˈɡɛnst ðə wɔl/
UK /hæv jʊər bæk əˈɡɛnst ðə wɔl/
"have your back against the wall" picture
1.

窮地に立たされる, 追い詰められる

to be in a very difficult situation where you have few choices and are forced to do something

:
With the deadline approaching and no progress, we really have our backs against the wall.
締め切りが迫り、進捗がないため、私たちは本当に窮地に立たされている
After losing his job and his home, he felt like he had his back against the wall.
仕事と家を失った後、彼は窮地に立たされていると感じた。