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eboshi; black-lacquered headgear made of silk, cloth or paper, originally worn by court nobles in ancient Japan
神主は烏帽子を被って祭祀を行った。
The Shinto priest wore an eboshi hat and performed the rite.
烏帽子は平安時代の正装の一つだった。
The eboshi was one of the formal garments of the Heian period.
武士の肖像画には烏帽子が描かれている。
Eboshi hats are depicted in samurai portraits.