Poison

1. To injure or kill by poison; to administer poison to.
2. To taint; to corrupt; to vitiate; as, vice poisons happiness; slander poisoned his mind.
3. That which taints or destroys moral purity or health; as, the poison of evil example; the poison of sin.
4. To put poison upon or into; to infect with poison; as, to poison an arrow; to poison food or drink.
5. Any agent which, when introduced into the animal organism, is capable of producing a morbid, noxious, or deadly effect upon it; as, morphine is a deadly poison; the poison of pestilential diseases.