Akademik

blue thistle
noun
a coarse prickly European weed with spikes of blue flowers; naturalized in United States
Syn: ↑blueweed, ↑blue devil, ↑viper's bugloss, ↑Echium vulgare
Hypernyms: ↑herb, ↑herbaceous plant
Member Holonyms: ↑Echium, ↑genus Echium

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noun
1. : blueweed 1
2. Australia : prickly poppy

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blueweed (def. 1).

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blue thistle,
= blueweed. (Cf.blueweed)

Useful english dictionary. 2012.