1. a poisonous plant with purple flowers and black berries, also called deadly nightshade
Usage: botanical
2. a drug derived from this plant, used medicinally to dilate pupils and treat certain conditions
Usage: medical

Examples

• The belladonna plant is extremely toxic if ingested.
• Medieval herbalists knew to avoid belladonna berries.
• The doctor used belladonna drops to examine her eyes.
• Belladonna has been used in medicine for centuries despite its dangers.
• The garden contained several poisonous plants, including belladonna.
• Belladonna extract was once used in cosmetics to dilate pupils.