armour plate

British  

noun

1. a tough heavy steel, usually containing chromium, nickel, and molybdenum and often hardened on the surface, used for protecting warships, tanks, etc

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Example Sentences

Small pieces of ceramic body armour plates also tell them these three men were fighting for Russia.

From BBC

“I was lucky to be safe and capture the visual of one of the rockets hitting the armour plate overhead,” he tweeted Tuesday.

From Washington Post

Among other evidence for the theory, the remains of early fish called placoderms – creatures with bony armour plates that also formed part of the jaws – shows they had internal skeletons made of cartilage.

From The Guardian

Big black paisleys pieced together like a children's jumbo jigsaw into a faux armour plate?

From The Guardian

Great chasms yawned; tongues of flame shot up from where one of the cupolas had been; shapeless shreds of armour plate lay amid jagged masses of masonry and heaps of stones.

From Project Gutenberg