Hoplomys gymnurus, a spiny rodent of Latin America.

(military, American spelling, of a device [usually a munition]) Intended to pierce armor.

US standard spelling of plate armour.

plural of armored cruiser

(military) A type of cruiser (the warship) common in the late 19th and early 20th centuries, carrying a small number of moderately-heavy main guns plus a large secondary battery of smaller guns and with armor protecting the sides and upper and lower decks, but lighter and with thinner armor and less powerful guns than a battleship; a mainstay of battle fleets around the turn of the 20th century, but displaced from this role by the more powerful battlecruiser after ca. 1908, becoming obsolescent by the time of WWI.

(slang, fiction, sometimes derogatory) A plot device wherein a fictional character or other entity repeatedly and inexplicitly avoids harm or misfortune, due to their importance to the work's continued plot; the property of being prone to deus ex machinas.

Alternative form of armoured train

plural of chink in the armor

plural of suit of armor

An armored vehicle for carrying infantry soldiers in combat.