[1] : The Collaborative International Dictionary of English v.0.48

centaurea \cen`taure"a\, prop. n. nl. see centaury. bot.
   a large genus of composite plants, related to the thistles
   and including the cornflower or bluebottle centaurea
   cyanus and the star thistle centaurea calcitrapa.
   1913 webster
see also:
centaury centaurea cyanus centaurea calcitrapa 

[2] : WordNet (r) 2.0

centaurea
     n : knapweed; star thistle syn: genus centaurea
see also:
genus centaurea 

Centaurea >> C Words
Centaurea, definition of term: Centaurea
centaurea_pag1.html