helmet-shaped hood
A historical Japanese hood that resembles a helmet, often associated with warriors or traditional attire. Rare in modern usage outside historical or cultural contexts.
I saw a scene in a period drama where a samurai was wearing a helmet-shaped hood.
Compound of 兜 (かぶと, 'helmet') and 頭巾 (ずきん, 'hood'). The exact historical derivation is uncertain, but the term describes a hood designed to resemble a helmet.