noun
Meaning 1
The Japanese custom of blackening the teeth with a solution of iron filings and vinegar, especially popular between the Heian and Edo periods, from the 10th century until the late 19th century.
Definition source: English Wiktionary via Wiktextract
Usage: historical, uncountable
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided