1. protective metal clothing worn by soldiers in battle
Usage: British spelling
2. the protective metal covering of a military vehicle or ship
Usage: British spelling
3. something that provides protection or defense
Usage: British spelling; figurative

1. to provide with protective covering
Usage: British spelling

Examples

• The knight wore heavy armour into battle.
• The tank’s thick armour protected it from enemy fire.
• Medieval armour was made of steel plates.
• The ship was armoured against torpedo attacks.
• She used humor as emotional armour against criticism.
• The company armoured its vehicles before the dangerous mission.