Definitions
1.NounAny one of a number of plants with daisy-like, button-shaped flowers of the genus Centaurea, especially the species Centaurea cyanus.
2.Nounfeverfew, Tanacetum parthenium.
3.NounThe plant Ranunculus aconitifolius.
4.NounA button which may be attached to clothing without resorting to needle and thread.