BOMBPROOF
bombproof, shellproof
(adjective) able to resist the explosive force of bombs and shells; “bombproof shelter”
bombproof
(verb) make safe against bombings
Source: WordNet® 3.1
Etymology
Adjective
bombproof (comparative more bombproof, superlative most bombproof)
Sufficiently strong to resist the effects of a blast from a bomb.
Synonyms
• shellproof
Noun
bombproof (plural bombproofs)
An air-raid shelter, a structure designed to give protection against air raids and bombs.
Synonyms
• air-raid shelter
• bomb shelter
Verb
bombproof (third-person singular simple present bombproofs, present participle bombproofing, simple past and past participle bombproofed)
(transitive) To make resistant to bomb blasts.
Source: Wiktionary
Bomb"proof`, a.
Definition: Secure against the explosive force of bombs.
– n.
Definition: A structure which heavy shot and shell will not penetrate.
Source: Webster’s Unabridged Dictionary 1913 Edition