Definition of armor
1 : defensive covering for the body; especially : covering (as of metal) used in combat
2 : a quality or circumstance that affords protection <the armor of prosperity>
3 : a protective outer layer (as of a ship, a plant or animal, or a cable)
4 : armored forces and vehicles (as tanks)
armorlessplay \-mər-ləs\ adjective
Examples of armor in a sentence
The officers are required to wear bulletproof body armor.
The shots penetrated the tank's armor.
The armadillo's armor consists of a series of small, bony plates.
a weapon designed for use against enemy armor
Origin and Etymology of armor
Middle English armure, from Anglo-French, from Latin armatura — more at armature
First Known Use: 13th century
ARMOR Defined for English Language Learners
Definition of armor for English Language Learners
: special clothing that people wear to protect their bodies from weapons
: a hard covering that protects something (such as a vehicle or an animal)
: soldiers and vehicles (such as tanks) that are protected with armor
ARMOR Defined for Kids
Definition of armor for Students
1 : a covering (as of metal) to protect the body in battle
2 : a hard covering that provides protection <A turtle's shell is its armor.>
3 : armored forces and vehicles (as tanks)
Seen and Heard
What made you want to look up armor? Please tell us where you read or heard it (including the quote, if possible).