The story
- Proto-Indo-European*h₂er-
- Proto-Indo-European*h₂(e)rmos
- Proto-Italic*armos
- Latinarma
- Latinarmō
- Latinarmātūra
- Old Frencharmeure
- Anglo-Normanarmure
- Middle Englisharmure
- English todayarmor
From Middle English armure, armour, armor, armeure, borrowed from Anglo-Norman armure and Old French armeüre, from Latin armātūra. Doublet of armature and armure. By surface analysis, arm (“to cover or furnish”) + -or (suffix forming agent nouns or nouns of quality, state, or condition).
Words from the same roots
Etymology from Wiktionary, CC BY-SA 4.0.