argol
/ˈɑrɡəl/
noun
- A crude tartar deposited on the inside of wine casks, used in making cream of tartar and in dyeing.
- In traditional dyeing, argol was sometimes used as a mordant to fix colors.
- The winemaker scraped argol from the barrel to use in the dyeing process.
- Argol is collected from old wine casks and refined into cream of tartar.
Synonyms