Definition of "valonia" []

• The dried acorn cups of an oak tree (Quercus aegilops) of the eastern Mediterranean, used chiefly in tanning and dyeing. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The first process -- the making of leather -- does not lie within the scope of this work; suffice it to say, that the hair or fur is first removed by lime, etc, and that after the skin is scraped it is treated variously with oak bark, valonia, sumach, divi-divi, etc.; it is a long and tedious process, and certainly does not lie within the province of"
• "Its main use was and is in combination with valonia as layers for sole leather."
• "The union of valonia and knoppern is that in most general use."