Answer:

tannic

Answer	Crossword Clue
TANNIC	Kind of acid found in red wine
TANNIC	Astringent, as red wine
TANNIC	Kind of acid

TANNIC	Kind of acid in red wine
TANNIC	Acid in wine
TANNIC	Acid in tea
TANNIC	Markedly astringent
TANNIC	Kind of acid.
TANNIC	Kind of acid from gallnuts
TANNIC	Kind of acid for hides
TANNIC	Bitter, as some red wines

TANNIC	Astringent, as wine
TANNIC	Kind of acid found in oak
TANNIC	Somewhat astringent, as wine
TANNIC	Bitter, in a way
TANNIC	Type of acid
TANNIC	... acid (wine component)

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.