Definitions

1. noun

A compound found in the bark, leaves, or roots of certain plants, especially oak, that is responsible for the astringent and bitter taste of tannins and for the tanning properties of some extracts.

“The winemaker carefully monitored the levels of tannin in the wine to ensure the perfect balance of flavors.”

2. noun

A substance used for tanning leather, especially in the process of tanning raw hides to make them more durable and resistant to decay.

“The tannery relied on high-quality tannin to produce the finest leather goods for the market.”

3. verb

To treat (leather) with tannin so as to make it more durable and resistant to decay.

“The skilled craftsman learned how to tan and finish the leather for the luxurious handbags.”