ㄅㄟˋㄔㄥˊㄐㄧㄝˋbèichéngjièyī

  1. 左傳》:餘燼背城借一。」意思集合殘部自己城牆借以最後背城借一最後決戰拼搏 整頓軍隊背城借一」。

to make a last-ditch stand before the city wall (idiom)​; to fight to the last ditch, to put up a desperate struggle