knapweed means any of various common weeds of, or formerly of, the genus Centaurea. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
knapweed is pronounced /ˈnæpwiːd/.
Etymology
Alteration of knopweed.
noun
- Any of various common weeds of, or formerly of, the genus Centaurea.“Near-synonym: hardhead”
- 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.