bombproof

[bom-proof]

adjective

strong enough to resist the impact and explosive force of bombs or shells: a bombproof shelter.

verb (used with object)

Origin of bombproof

First recorded in 1695–1705; bomb + -proof

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Cooper, who worked closely with Ailes at the time, was with him at the News Corp. building when he requested the bombproof glass.
NYPD Gives Fox News Special Protection
Kelly Knaub
December 1, 2011

When I think of the trenches again I think of the bombproof, near Labasse.
Behind the Scenes in Warring Germany
Edward Lyell Fox
With other wounded I was taken to the bombproof in the fort.
My Life In The South
Jacob Stroyer
Mrs. Wagoner's husband had been in a bombproof during the war, when Jim Upton (Jim's father) was with his company.
"Run To Seed"
Thomas Nelson Page
They were to carry guns of heavy metal, and to be bombproof on the top, with a descent for the shells to slide off.
Held Fast For England
G. A. Henty
After zigging through a bombproof half-furlong of roof, he was dropping into a large twilit cave.
The Creature from Cleveland Depths
Fritz Reuter Leiber