It’s a covering used to protect an object or a person or vehicle.
It’s a covering used to protect an object, individual, or vehicle from physical injury or damage. Also to protect from a potentially dangerous environment or activity.
Body armor or personal armor is protective clothing designed to absorb or deflect physical attacks. Personal armor is used to protect soldiers and war animals.
I consider the Covid face mask one of the 21st century armor.
Vehicle armor is used on warships, armored fighting vehicles, and some mostly ground attack combat aircraft.
A second use of the term armor describes armored forces, and their role in combat.
The word “armor” began to appear in the Middle Ages as a derivative of Old French.
It is dated from 1297 as a “mail, defensive covering worn in combat”.
The word originates from the Old French Armure, itself derived from the Latin Armatura.