Knop″pern (?), n. [Cf. G. knopper. See Knop.] (Zoöl.) A kind of gall produced by a gallfly on the cup of an acorn, — used in tanning and dyeing.
Content
Rights and sources
Review source, license and attribution information for this content.
Content
Webster's Dictionary 1913
Webster's Revised Unabridged Dictionary, C. & G. Merriam Co., 1913.