Etymology of the English word armour
the English word
armourderived from the Old French word
armurederived from the Latin word
armatura (equipment, armor; troop)
derived from the Latin word
armatioderived from the Latin word
armatus (armed man, soldier; armed, equipped; defensively armed; type of arms, equipment, armor)
derived from the Latin word
armare (equip, fit with armor; arm)
derived from the Latin word
armaderived from the Proto-Indo-European root
*ar-Date
The earliest known usage of armour in English dates from the 13th century.