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black knot

   Also found in: Encyclopedia, Wikipedia 0.01 sec.
black knot
n.
A disease of the plum, the cherry, and related plants caused by the fungus Apiosporina morbosa and resulting in black knotlike swellings on the branches.
black knot
n
(Life Sciences & Allied Applications / Plant Pathology) a fungal disease of plums and cherries caused by Dibotryon morbosum, characterized by rough black knotlike swellings on the twigs and branches
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.black knot - disease of plum and cherry trees characterized by black excrescences on the branches
plant disease - a disease that affects plants


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And then, within thirty yards of the pit, advancing from the direction of Horsell, I noted a little black knot of men, the foremost of whom was waving a white flag.
The War Of The Worlds by Wells, H.G. View in context
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