(of bullets, artillery shells, etc.) designed especially for piercing armor.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use armor-piercing in a sentence
Evidence of execution-style gunshots with armor-piercing bullets has emerged.Ukraine Is On the Verge Of War And Putin Is To Blame | Michael Weiss | February 20, 2014 | THE DAILY BEAST
Furthermore, the cannon and armor-piercing bombs of Shturmovik ground-attack aircraft posed a mortal peril for the German tanks.
And nobody needs a 30-round clip of high-velocity, steel-jacketed, armor-piercing ordnance for target shooting.
Equally interesting was the construction of the armor-piercing bullet.America's Munitions 1917-1918 | Benedict Crowell
Then an artillery officer said, dreamily, "The armor-piercing shells the railroad guns use have lead caps."The Onslaught from Rigel | Fletcher Pratt
She had rounded the Moscow's stern, raking her as she came, and sending armor-piercing shells through her citadel."Where Angels Fear to Tread" and Other Stories of the Sea | Morgan Robertson
Thus, the proportions of the shrapnel gun will be intermediate between those of the armor-piercing gun and the shell gun.
Hence an armor-piercing gun should have a large chamber and a comparatively small bore of great length.