shellproof

/ˈʃɛlpruːf/
adjective
  1. Designed to resist damage from explosive shells or artillery fire.
    • The old fortress was not shellproof and was easily damaged.
    • The bunker was built to be shellproof against heavy artillery.
    • They constructed a shellproof shelter for the soldiers.
Synonyms
What does "shellproof" mean? | whatsthatwordmean | whatsthatwordmean