blueweed

from WordNet (r) 3.0 (2006)

blueweed
    n 1: a coarse prickly European weed with spikes of blue flowers;
         naturalized in United States [syn: {blueweed}, {blue
         devil}, {blue thistle}, {viper's bugloss}, {Echium
         vulgare}]

from The Collaborative International Dictionary of English v.0.48

blueweed \blue"weed\ n.
   a coarse prickly European weed ({Echium vulgare}) with spikes
   of blue flowers; naturalized in the U. S.

   Syn: blue devil, blue thistle, viper's bugloss.
        [WordNet 1.5]

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