Any of the genus Centaurea of herbaceous thistle-like flowering plants.
Any of several perennial composite plants, especially of genera Cirsium, Carduus, Cynara, or Onopordum, having prickly leaves and showy flower heads with prickly bracts.
This plant used as a charge.
The Order of the Thistle, or membership thereof.
This plant seen as the national emblem of Scotland.