单词	knopper gall
释义	knopper gall /ˈnɒpə / noun 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. Origin Late 19th century: knopper from German Knopper 'gall'.
随便看	water authority water baby water bag water-bailage water bailie water bailiff water balance waterball water ballast water ballet water balloon water bank water baptism water bar water barge water barometer water-based water bat water bath water bean water bear Water Bearer water-bearing waterbed water beech

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