a strong metal or leather covering worn to protect the body during fighting, a hard covering that protects something, especially an animal or a vehicle

suit of armor, armor-piercing, armor-clad

Formal and Informal Expressions of armor

In different contexts, you can replace 'armor' with suitable alternatives. In a more formal setting, 'protection, shield, defence' is apt. In informal speech or writing, 'plate' is a commonplace synonym.

armor: Explore its Definition & Usage

armor Definition

1a strong metal or leather covering worn to protect the body during fighting
2a hard covering that protects something, especially an animal or a vehicle

Using armor: Examples

Take a moment to familiarize yourself with how "armor" can be used in various situations through the following examples!

Example
The knight wore a suit of armor.
Example
The tank's armor was impenetrable.
Example
The animal's armor protected it from predators.
Example
The car's armor plating saved the passengers from harm.

armor Synonyms and Antonyms

Synonyms for armor

Phrases with armor

suit of armor
a complete set of armor worn by a medieval knight
Example
The museum had a display of a full suit of armor.
armor-piercing
designed to penetrate armor or other hard materials
Example
The military used armor-piercing bullets to take out enemy tanks.
armor-clad
covered with armor or protected by armor
Example
The armored truck was armor-clad to protect its valuable cargo.

Origins of armor

from Old French 'armure', from Latin 'armatura', meaning 'arms, equipment'

📌

Summary: armor in Brief

'Armor' [ˈɑːmər] refers to a strong metal or leather covering worn for protection during fighting, or a hard covering that protects something. Examples include a knight's suit of armor, a tank's armor, or an animal's protective armor. Phrases like 'armor-piercing' and 'armor-clad' denote weapons or objects designed to penetrate or be covered in armor, respectively.