'armour' originates from Old French, specifically the word 'armure', where the root 'arm-' (from Latin 'arma') meant 'arms' or 'weapons'.

'armour' changed from Latin 'armatura' to Old French 'armure' and eventually became the modern English word 'armour' through Middle English.

Initially, it meant 'equipment of arms' or 'armament', but over time it evolved into its current meaning of 'a protective covering' (especially wearable or vehicle protection).