半はん臂ぴ

noun

short-sleeved or sleeveless undergarment for aristocratic men

Historical term for a garment worn by male aristocrats in ancient Japan, typically under outer robes. Rare in modern usage outside historical or literary contexts.

• 平へい安あん時じ代だいの貴き族ぞくは、袍ほうの下したに半はん臂ぴを着ちゃく用ようした。

  Heian-period nobles wore a 半臂 under their outer robe.