退路 たいろ
tairō tatsu

Godan Verb (tsu)
Expression

1. to cut off the retreat

後方 こうほう てき現状 げんじょうあくまで退路 たいろ つだけの存在 そんざい
kōhōno tekiwa genjōakumade tairō tatsudakeno sonzai.
The enemy behind us presently exists solely to cut off our retreat.