Word Study
centaurea nigra
WORDNET DICTIONARY
Noun centaurea nigra has 1 sense
- centaurea nigra(n = noun.plant) black knapweed, hardheads, lesser knapweed - a weedy perennial with tough wiry stems and purple flowers; native to Europe but widely naturalized; Array is a kind of knapweed
For further exploring for "centaurea nigra" in Webster Dictionary Online