 hardheads |
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| 1. | [ noun ] (botany) a weedy perennial with tough wiry stems and purple flowers; native to Europe but widely naturalized | |
| Synonyms: | black_knapweed Centaurea_nigra lesser_knapweed | |
| Related terms: | knapweed | |
| Similar spelling: |
hardheaded hard_hat hardihood hard_wheat |
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