お歯は黒ぐろ

noun

tooth blackening; ohaguro

Historical custom in Japan, practiced mainly by married women and some aristocrats until the late 19th century.

• 江え戸ど時じ代だいには、お歯は黒ぐろは既き婚こん女じょ性せいの習しゅう慣かんだった。

  In the Edo period, tooth blackening was a custom of married women.

noun

tooth-blackening dye; ohaguro solution

The dark dye itself, traditionally made from iron filings dissolved in vinegar and mixed with tannin from gallnut powder.

• お歯は黒ぐろは、鉄漿かねとも呼よばれる染せん料りょうを使つかっていた。

  Ohaguro used a dye also called 鉄漿.