belladonna

• 指一种多年生欧亚草本植物，花呈红褐色钟形，结黑色浆果；也指从该植物中提取的生物碱提取物，用于医药。

A noun referring to a perennial Eurasian herb with reddish bell-shaped flowers and black berries, or an alkaloidal extract from this plant used medicinally.

1. Poisonous plantC1formalmedical

   A perennial Eurasian herb with reddish bell-shaped flowers and shiny black berries, also known as deadly nightshade; its roots and leaves yield atropine.

   有毒植物

   • Belladonna is highly toxic if ingested by humans or animals.
   • The plant's berries are dangerously attractive to children.
   • Historically, belladonna was used in cosmetics to dilate pupils.

   同义词deadly nightshade

2. Medicinal extractC1formalmedical

   An alkaloidal extract or tincture derived from the belladonna plant, used medicinally for its anticholinergic properties.

   药用提取物

   • Belladonna extract is sometimes used to treat muscle spasms.
   • The tincture of belladonna must be administered with extreme caution.
   • Doctors prescribe belladonna-based remedies for certain gastrointestinal conditions.