Definition of "armor" []

• A defensive covering, as of metal, wood, or leather, worn to protect the body against weapons. (noun)
• A tough, protective covering, such as the bony scales covering certain animals or the metallic plates on tanks or warships. (noun)
• A safeguard or protection: faith, the missionary's armor. (noun)
• The combat arm that deploys armored vehicles, such as tanks. (noun)
• The armored vehicles of an army. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Where we do see cracks in armor is in new-home construction, both in single-family sales and condos."
• "Any chink in the armor is to be avoided at all costs; it will just turn up on YouTube and everyone will laugh at you."
• "We knew the Kindle's DRM would be cracked the minute we heard about it, and it looks like the first chink in the armor is here courtesy of Igor Skochinsky: he's discovered the algorithm the Kindle uses to turn regular Mobipocket books into Amazon's proprietary. azw format."