KNAPWEED


Meaning of KNAPWEED in English

■ noun a tough-stemmed plant with purple thistle-like flower heads. [ Centaurea nigra and related species.]

Origin

ME (orig. as knopweed ): from knop (because of its rounded flower heads) + weed .

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.