指さし小こ旗ばた

noun

small back-flag worn on armor

Historical term for a small identifying flag attached to the back of Japanese armor (yoroi) during battle. Rare in modern usage outside historical or museum contexts.

• 戦せん国ごく時じ代だいの甲冑かっちゅうには、指さし小こ旗ばたが背せ中なかに付つけられていた。