The American Heritage® Dictionary of the English Language, 4th Edition
n. Any of several herbs of the genus Centaurium, especially a Eurasian species (C. erythraea) that has clusters of pink flowers and has long been used in herbal medicine.
n. Any of the flowering plants in the genus Centaurium.
the GNU version of the Collaborative International Dictionary of English
n. A gentianaceous plant not fully identified. The name is usually given to the Erytheræa Centaurium and the Chlora perfoliata of Europe, but is also extended to the whole genus Sabbatia, and even to the unrelated Centaurea.
The Century Dictionary and Cyclopedia
n. The popular name of various plants, chiefly of the knapweed, Centaurea nigra.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. any plant of the genus Centaurea
n. any of various plants of the genus Centaurium
Word Usage
"Even in the really bright pink flowers such as rosebay willowherb, blue sneaks in to add a trace of purple as it does in wild thyme and centaury."