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In some senses, bombproof is marked as figuratively, informal. Watch for register when choosing this word.
ADJ.
slow
BOMBPROOF + NOUN
buildings
PREP.
down, into
adj
Sufficiently strong to resist the effects of a blast from a bomb.
bombproof buildings
Very sturdy; as if built to resist the effects of a blast from a bomb.
Steve's steel-frame mountain bike is heavy and slow, but it's bombproof.
noun
An air-raid shelter, a structure designed to give protection against air raids and bombs.
As I waded through the mud to go down into the bombproof, it struck me uneasily that our officers glanced at each other.
At night, when the Federal guns slowed their fire, the men created new traverses and bombproofs.
verb
To make resistant to bomb blasts.
adjective — able to resist the explosive force of bombs and shells
bombproof buildings
WiktionarySteve's steel-frame mountain bike is heavy and slow, but it's bombproof.
WiktionaryAs I waded through the mud to go down into the bombproof, it struck me uneasily that our officers glanced at each other.
WiktionaryAt night, when the Federal guns slowed their fire, the men created new traverses and bombproofs.
WiktionaryIt mounted a 10-inch Columbiad and two 32-pounders on the sea face, with field guns and other 32-pounders elsewhere. In addition to this armament, it contained two bombproofs.
Wiktionaryi Register
In some senses, bombproof is marked as figuratively, informal. Watch for register when choosing this word.