black knapweed
noun
Common knapweed, Centaurea nigra, which has dark purple flowers.
Origin
Late 16th century; earliest use found in John Gerard (c1545–1612), herbalist.
| 单词 | black knapweed |
| 释义 | black knapweednoun Common knapweed, Centaurea nigra, which has dark purple flowers. Origin |
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