noun
dead end; cul-de-sac; blind alley
Refers to a physical street or path that ends with no exit.
この道は袋小路になっているから、引き返そう。
This road is a dead end, so let's turn back.
noun
Figurative use for a situation where no progress can be made, such as in negotiations or problem-solving.
交渉は袋小路に陥ってしまった。
The negotiations have reached an impasse.