['bitәwi:d] n. 含有苦素的植物(如豚草等)Bittner milk factor [生化]毕特纳乳因子
bitterweed
[ noun ]
widespread European weed with spiny tongue-shaped leaves and yellow flowers; naturalized in United States
<noun.plant>
any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma
<noun.plant>
Bitterweed \Bit"ter*weed`\, n. (Bot.) A species of {Ambrosia} ({Ambrosia artemisi[ae]folia}); Roman worm wood. --Gray.