ar ‧ mour BrE AmE British English , armor American English /ˈɑːmə $ ˈɑːrmər/ noun [uncountable]
[ Date: 1200-1300 ; Language: Old French ; Origin: armure , from Latin armatura ; ⇨ ↑ armature ]
1 . metal or leather clothing that protects your body, worn by soldiers in battles in past times:
a knight wearing a suit of armour
2 . a strong metal layer that protects military vehicles:
armour-clad warships
3 . a strong layer or shell that protects some plants and animals
⇨ a chink in sb’s armour at ↑ chink 1 (3), ⇨ a knight in shining armour at ↑ knight 1 (4)