Meaning of “armour” in the English Dictionary

british dictionary

"armour" in British English

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armournoun [ U ]

UK US armor uk /ˈɑː.mər/ us /ˈɑːr.mɚ/

strong covering that protects something, especially the body:

Police put on body armour before confronting the rioters.
In the past, knights used to wear suits of armour (= protective covering made of metal) in battle.
These grenades are able to pierce the armour of tanks.

military vehicles that are covered in strong metal to protect them from attack:

The troops were backed by tanks, artillery, and other heavy armour.

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(Definition of “armour” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)