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armor

/ˈɑː.mə/ · arm·or
noun
  1. A protective layer over a body, vehicle, or other object intended to deflect or diffuse damaging forces. The tank's armor allowed it to withstand multiple missile strikes.
  2. A natural form of this kind of protection on an animal's body. The turtle's armor protected it from predators in the wild.
  3. Metal plate, protecting a ship, military vehicle, or aircraft. The warship's armor plating made it nearly invulnerable to enemy fire.
verb
  1. To equip something with armor or a protective coating or hardening. The engineers armored the vehicle to protect it from mines.
  2. To provide something with an analogous form of protection. The software armored the computer against viruses and malware.
Did you know? The word 'armor' has been used in various forms since the 14th century, with its earliest recorded use in Chaucer's Canterbury Tales.
Written by Lexi Wordsworth, Dictionary Editor 2 lookups Added Aug 6, 2026