Knoppern

• (n.) A kind of gall produced by a gallfly on the cup of an acorn, -- used in tanning and dyeing.
Found on http://thinkexist.com/dictionary/meaning/knoppern/

Knoppern

Knop'pern noun [ Confer German knopper . See Knop .] (Zoology) A kind of gall produced by a gallfly on the cup of an acorn, -- used in tanning and dyeing.
Found on http://www.encyclo.co.uk/webster/K/16
No exact match found