KNOPPERN
Source: 567
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.
Source: 567
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.