胎たい内ないくぐり

noun

ritual passage through a narrow space symbolizing rebirth

Refers to a folk or religious practice of crawling through a cave, a grass ring, or a hole in a large Buddhist statue to symbolically undergo rebirth or purification.

• 胎たい内ないくぐりをすると、生うまれ変かわったような気き持もちになる。

  When you go through a ritual passage, you feel as if you have been reborn.

noun

narrow grotto; tight cave passage

A physical narrow cave or grotto that a person can barely squeeze through; often associated with the ritual practice but can refer to the place itself.

• この山やまには小ちいさな胎たい内ないくぐりがあって、観かん光こう客きゃくに人にん気きだ。

  This mountain has a small narrow grotto that is popular with tourists.