Bible Dictionaries
Bombproof

Webster's Dictionary

(1):

(n.) A structure which heavy shot and shell will not penetrate.

(2):

(a.) Secure against the explosive force of bombs.

Bibliography Information
Webster, Noah. Entry for 'Bombproof'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​b/bombproof.html. 1828.