Synonyms: bomb shelter, bombproof, air-raid shelter
Definition: a chamber (often underground) reinforced against bombing and provided with food and living facilities; used during air raids
Similar words: chamber
Definition: a natural or artificial enclosed space
Synonyms: bombproof
Definition: make safe against bombings
Similar words: proof
Definition: make resistant (to harm)
Usage: proof the materials against shrinking in the dryer
Synonyms: shellproof, bombproof
Definition: able to resist the explosive force of bombs and shells
Usage: bombproof shelter
Similar words: invulnerable
Definition: immune to attack; impregnable
Usage: gunners raked the beach from invulnerable positions on the cliffs