D defs.my
Entry 2 senses Webster, 1913

Armor

/är'-mẽr/ · Ar·mor · IPA /ˈɑːɹ.mɚ/
01 n. Defensive arms for the body; any clothing or covering worn to protect one's person in battle.
  1. 1.
    Defensive arms for the body; any clothing or covering worn to protect one's person in battle.
  2. 2.
    Steel or iron covering, whether of ships or forts, protecting them from the fire of artillery.
Phrases & compounds
Coat armor — the escutcheon of a person or family, with its several charges and other furniture, as mantling, crest, supporters, motto, etc.
Submarine armor — a water-tight dress or covering for a diver. See under Submarine.