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more about bitterweed
bitterweed |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Bitterweed \Bit"ter*weed`\, n. (Bot.) A species of Ambrosia ({A. artemisi[ae]folia}); Roman worm wood. --Gray. From WordNet r 1.6 [wn]: bitterweed n 1: widespread European weed with spiny tongue-shaped leaves and yellow flowers; naturalized in United States [syn: {oxtongue}, {bristly oxtongue}, {bugloss}, {Picris echioides}] 2: any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma [syn: {ragweed}, {ambrosia}]
more about bitterweed