Learn how to say Cornflower correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word cornflower:
a slender Eurasian plant related to the knapweeds, with flowers that are typically a deep, vivid blue.
Genus Centaurea, family Compositae: several species, including the annual Centaurea cyaneus (also called bluebottle), formerly a common weed of cornfields, and the perennial C. montana, grown in gardens
(also cornflower blue) [mass noun] a deep, vivid blue colour:
from cornflower to azure, there are herringbones, checks, and ginghams