単ひとえ衣ぎぬMeanings1noununlined kimono; single-layer kimonoHistorical term for an unlined kimono worn as an undergarment by court nobles in the Heian period. Not used in modern everyday clothing contexts.平へい安あん時じ代だいの貴き族ぞくは、単ひとえ衣ぎぬを重かさねて着きていた。Heian-period nobles wore layers of unlined kimono.