水みず上かみ下しも

noun

light blue samurai costume worn for ritual suicide

Historical term for a specific light blue kamishimo (裃) ensemble traditionally donned by samurai when performing seppuku. Rarely encountered outside historical or literary contexts.

• 時じ代だい劇げきで、切せっ腹ぷくの場ば面めんになると水みず上かみ下しもを着きた武ぶ士しが現あらわれる。

  In period dramas, a samurai wearing a light blue kamishimo appears when it's time for seppuku.