blueweed

Noun

blue=weed

WORDNET DICTIONARY

blueweed(n = noun.plant) blue devil, blue thistle, echium vulgare, viper's bugloss - a coarse prickly European weed with spikes of blue flowers; naturalized in United States;

is a kind of herb, herbaceous plant

is a member of echium, genus echium

blueweed, n.

a coarse prickly European weed (Echium vulgare) with spikes of blue flowers; naturalized in the U. S. [WordNet 1.5]