austere; austerity
wine with excessive tannins or acidity accompanied by a lack of richness, fruit, and body. austerity is most often found in young, immature wines that may mellow during aging.
The New Wine Lovers Companion, 2nd Edition, by Ron Herbst and Sharon Tyler Herbst. Copyright © (1) 2003, 1995 by Ron Herbst and Sharon Tyler Herbst. Reprinted by arrangement with Barron's Educational Series, Inc.