牝め瓦がわら

noun

concave roof tile

In traditional Japanese roofing, the concave tile that is laid with the hollow side up to channel water; paired with the convex 牡瓦 (おがわら).

• 日本にほん建けん築ちくの屋や根ねには、牝め瓦がわらと牡お瓦がわらが交こう互ごに葺ふかれている。

  On the roofs of traditional Japanese buildings, concave tiles and convex tiles are laid alternately.