Poisonous Substances

noun a highly toxic metallic element that is used in various industrial processes and is a common cause of poisoning

• Arsenic is a highly toxic chemical element often used in pesticides.
• I heard that arsenic was found in the water supply.
• Don't eat that fish, it's probably full of arsenic!
• His words were like arsenic, poisoning the atmosphere of the room.

noun a type of plant belonging to the genus Aconitum, known for its toxic properties

• Aconites are a type of flowering plant that is highly toxic if ingested.
• I heard that aconites are poisonous, so be careful around them.
• Don't mess with those aconites, they can really make you sick.
• The aconites in her life represented the toxic relationships she needed to cut out.