armor

[ahr-mer]
See more synonyms for armor on Thesaurus.com
noun
  1. any covering worn as a defense against weapons.
  2. a suit of armor.
  3. a metallic sheathing or protective covering, especially metal plates, used on warships, armored vehicles, airplanes, and fortifications.
  4. mechanized units of military forces, as armored divisions.
  5. Also called armament. any protective covering, as on certain animals, insects, or plants.
  6. any quality, characteristic, situation, or thing that serves as protection: A chilling courtesy was his only armor.
  7. the outer, protective wrapping of metal, usually fine, braided steel wires, on a cable.
verb (used with object)
  1. to cover or equip with armor or armor plate.
Also especially British, ar·mour.

Origin of armor

1250–1300; Middle English armo(u)r, armure < Anglo-French armour(e), armure Old French armëure < Latin armātūra armature; assimilated, in Middle English and Anglo-French, to nouns ending in -our -or2
Related formsar·mor·less, adjectivean·ti·ar·mor, adjectivesub·ar·mor, noun
Can be confusedamour armoire armor
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for armor

shield, plate, defense, guard, protection, mail, sheath, security

Examples from the Web for armor

Contemporary Examples of armor

Historical Examples of armor


British Dictionary definitions for armor

armor

noun
  1. the US spelling of armour
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for armor
n.

c.1300, "mail, defensive covering worn in combat," also "means of protection," from Old French armeure "weapons, armor" (12c.), from Latin armatura "arms, equipment," from arma "arms, gear" (see arm (n.2)). Figurative use from mid-14c.

Meaning "military equipment generally," especially siege engines, is late 14c. The word might have died with jousting if not for late 19c. transference to metal-shielded machinery beginning with U.S. Civil War ironclads (first attested in this sense in an 1855 report from the U.S. Congressional Committee on Naval Affairs).

v.

mid-15c., from armor (n.). Related: Armored; armoring.

Online Etymology Dictionary, © 2010 Douglas Harper

Idioms and Phrases with armor

armor

see chink in one's armor; knight in shining armor.

The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.