This is the 17180th most frequent Turkish word.
çıkmaz
A dead end or impasse.
Here, 'çıkmaz' is used as a noun referring to a dead-end street.
Bu sokak bir çıkmaz sokaktır.
This street is a cul-de-sac.
In this sentence, 'çıkmaz' is used metaphorically as a noun indicating a situation where progress or resolution is difficult or impossible.
Bu sorunu çözemezsem bir çıkmaza girerim.
If I can't solve this problem, I'll fall into an impasse.
Here, 'çıkmaz' functions as an adjective describing routes or ways that are dead ends or failures.