[tan.nin] n [F, fr. tanner to tan] (1802) 1: any of various soluble astringent complex phenolic substances of plant origin used esp. in tanning, dyeing, the making of ink, and in medicine
2: a substance that has a tanning effect
[tan.nin] n [F, fr. tanner to tan] (1802) 1: any of various soluble astringent complex phenolic substances of plant origin used esp. in tanning, dyeing, the making of ink, and in medicine
2: a substance that has a tanning effect
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012