noun
way of escape; escape route
Refers to a physical or metaphorical means of fleeing or avoiding a situation. Often used in contexts of planning an exit or finding a loophole.
火事に備えて逃げ口を確認しておく。
Check the escape route in case of fire.
彼はいつも言い訳の逃げ口を用意している。
He always has an escape route ready in the form of an excuse.