armour

ot noun

1. A protective layer over a body, vehicle, or other object intended to deflect or diffuse damaging forces.
2. A natural form of this kind of protection on an animal's body.
3. Metal plate, protecting a ship, military vehicle, or aircraft.
4. A tank, or other heavy mobile assault vehicle.

fe’l verb

1. To equip something with armour or a protective coating or hardening.
2. To provide something with an analogous form of protection.