bombproof

An air-raid shelter, a structure designed to give protection against air raids and bombs.

Japanese Meaning

防空壕 - 空襲や爆弾からの攻撃に対して保護を提供するために設計された施設

As the sirens wailed, the townspeople scrambled into the bombproof and waited in silence until the danger passed.

サイレンが鳴り響く中、町の人々は防空壕に駆け込み、危険が過ぎ去るまで静かに待った。

Sense（1）

An air-raid shelter, a structure designed to give protection against air raids and bombs.

bombproofs

（ plural ）