腹背受敵（腹背受敵）　

◎ 腹背受敵 fùbèi-shòudí

[be attacked front and rear; be surrounded back and belly;be surrounded by the enemy at the front and rear] 前面后背受到敵人夾擊

今則脊尾俱搖,腹背受敵,舊地皆失。——《揮麈三錄》引王襄檄文