1. a highly poisonous alkaloid found in poison hemlock plants
Usage: chemistry; toxicology

Examples

• Coniine is the toxic compound that makes poison hemlock so dangerous.
• The ancient Greeks used coniine as a method of execution.
• Scientists study coniine to understand its effects on the nervous system.
• Even small amounts of coniine can be lethal to humans and animals.
• The chemical structure of coniine was first determined in the 19th century.