black knot black knapweed • blackland · · · Info · Definitions · Characters · · black knot · · Text Common · · Latin · · Scripts 10 · · Length 2 · · Syllables Definitions · · · (noun) disease of plum and cherry trees characterized by black excrescences on the branches. Synonyms: black knot. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 c latin small letter c U+0063 k latin small letter k U+006B l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F t latin small letter t U+0074