·vi To act as, or convey, a poison.
II. Poison ·noun To injure or kill by poison; to administer poison to.
III. Poison ·noun To put poison upon or into; to infect with poison; as, to poison an arrow; to poison food or drink.
IV. Poison ·noun That which taints or destroys moral purity or health; as, the poison of evil example; the poison of sin.
V. Poison ·noun To Taint; to Corrupt; to Vitiate; as, vice poisons happiness; slander poisoned his mind.
VI. Poison ·noun 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.