armor

A protective layer over a body, vehicle, or other object intended to deflect or diffuse damaging forces.

a suit of armor

You teach me how to be a man / Though I am someone's daughter / The path of warrior was set for me / And I had to try on the armour / No it doesn't suit me / And it feels so heavy / I'm frightened and so ashamed / That I have to combat the world alone / That I have to swing my sword alone

A natural form of this kind of protection on an animal's body.

A metal plate, protecting a ship, military vehicle, or aircraft.

A tank, or other heavy mobile assault vehicle.

A military formation consisting primarily of tanks or other armoured fighting vehicles, collectively.

Good work, Chief. Link up with our armor on the far side of the wall.

To equip something with armor or a protective coating or hardening.

To provide something with an analogous form of protection.

A surname.