bitterweed   (TTS Sound)

The bitterweed has 2 Senses.

• bristly oxtongue, oxtongue, picris echioides, bitterweed, bugloss
• widespread European weed with spiny tongue-shaped leaves and yellow flowers; naturalized in United States
• とげだらけの舌形の葉と黄色の花のある広範囲にわたるヨーロッパの雑草

• ambrosia, ragweed, bitterweed
• ブタクサ
• any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma
• 主に北米産の種々のブタクサ属の雑草の総称で、花粉は高程度にアレルギーを誘発し多くの花粉症や喘息の原因となる