camel's nose

Noun

idiomatic

(idiomatic) A situation where the permitting of some small act will lead to a larger undesirable act or circumstance.

Japanese Meaning

小さな譲歩や許容が、後に大きな望ましくない行動や状況につながる状態

Allowing one small exception is the camel's nose that opens the door to much larger problems.

小さな例外を認めることは、やがて大きな問題を招く小さな譲歩の始まりです。

Sense（1）

(idiomatic) A situation where the permitting of some small act will lead to a larger undesirable act or circumstance.

camels' noses

（ plural ）