have your back against the wall
US /hæv jʊər bæk əˈɡɛnst ðə wɔl/
UK /hæv jʊər bæk əˈɡɛnst ðə wɔl/

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。