Definition of armour plating in English:

armour plating

Pronunciation /ˌɑːmə ˈpleɪtɪŋ/

noun

(US armor plating)
  • Protective or defensive covering made from or as from armour plates.

Origin

Mid 19th century; earliest use found in John Clare (1793–1864), poet, farm labourer, and naturalist. From armour + plating.