Share this entry
knopper gall Line breaks: knop|per gall
Pronunciation: /ˈnɒpə/

Definition of knopper gall in English:


A hard, irregular umbrella-like gall which forms on an oak acorn in response to the developing larva of a gall wasp.
  • The wasp is Andricus quercuscalicis, family Cynipidae


Late 19th century: knopper from German Knopper 'gall'.

Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove adverts and access premium resources