单词 | black knot |
释义 | black knot in British Englishnoun a fungal disease of plums and cherries caused by Dibotryon morbosum, characterized by rough black knotlike swellings on the twigs and branches black knot in American English US a disease of cherry and plum trees caused by a fungus (Plowrightia morbosa), in which hard, black swellings appear on twigs and branches |
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