knapweed
Short definition from Wiktionary
Noun
- Any of various common weeds of, or formerly of, the genus Centaurea.
- Any of various common weeds of, or formerly of, the genus Centaurea: Centaurea nigra.
- Any of various common weeds of, or formerly of, the genus Centaurea: Rhaponticum repens.
- Any of various common weeds of, or formerly of, the genus Centaurea: Centaurea calcitrapa.
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