1. the inner part of the bark of a North American black oak (Quercus velutina), containing tannin and used in tanning and dyeing
2. a yellow dye made from this bark
Webster’s New World College Dictionary, Fourth Edition, compiled by the
editors of Webster’s New World Dictionaries. Copyright © 2010 by Houghton
Mifflin Harcourt. Published by Houghton Mifflin Harcourt. All rights reserved.