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tannin

US [ˈtænɪn]
UK ['tænɪn]
  • n.单宁;单宁酸;鞣质
  • Web丹宁;丹宁酸;鞣酸
Plural Form:tannins  
tannin
n.
1.
单宁;单宁酸;鞣质a yellowish or brownish substance found in the bark of some trees and the fruit of many plants, used especially in making leather, ink and wine