Cannonproof
"Cannonproof" in a Sentence (2 examples)
It had not helped the duke to build himself a cannonproof stone chamber to sleep in for dread of vengeance after the assassination of Orleans.
A cannonproof breastwork, built during the previous war, extended along the beach from the hills to the rocks.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.