hardheads

noun

1. a shrewd, practical person.
2. a blockhead.
3. a freshwater fish, Mylopharodon conocephalus, of California.
4. the Atlantic croaker.See under croaker(def 2).
5. hardhead sponge.
6. hardheads. a common knapweed, Centaurea nigra.
7. hard head.

noun

1. an alloyed silver coin of Scotland, issued in the 16th and 17th centuries, equal to one and one-half pence and later to twopence.

noun

1. any composite plant of the genus Centaurea, especially the weedy C. nigra, having rose-purple flowers set on a dark-colored, knoblike bract.

noun

1. (functioning as singular) a thistle-like plant, Centaurea nigra, native to Europe and introduced into North America and New Zealand, that has reddish-purple flower heads: family Asteraceae (composites)Also called: knapweed See also centaury (def. 2)

noun

1. any of several plants of the genus Centaurea, having purplish thistle-like flowers: family Asteraceae (composites)See also centaury (def. 2), hardheads