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|Noun||1.||blue thistle - a coarse prickly European weed with spikes of blue flowers; naturalized in United States|
herb, herbaceous plant - a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.