* Literal meaning: The bright red mushrooms were poisonous and should not be eaten.
* Figurative meaning: Her poisonous words cut him to the core.
* Figurative meaning: The air in the factory was filled with poisonous fumes.
* Figurative meaning: Jealousy is a poisonous emotion that can destroy relationships.
* Figurative meaning: The politician's rhetoric was poisonous and divisive.
You can also use "poisonous" to describe something that is extremely harmful or damaging, even if it doesn't literally contain poison.