Poison \Poi"son\, v. t. [imp. & p. p. Poisoned; p. pr. & vb. n. Poisoning.]

[Cf. OF. poisonner, F. empoissoner, L. potionare to give to drink. See Poison, n.]

1. To put poison upon or into; to infect with poison; as, to poison an arrow; to poison food or drink. ``The ingredients of our poisoned chalice.'' --Shak.

2. To injure or kill by poison; to administer poison to.

If you poison us, do we not die ? --Shak.

3. To taint; to corrupt; to vitiate; as, vice poisons happiness; slander poisoned his mind.

Whispering tongues can poison truth. --Coleridge.

Source: Webster's Revised Unabridged Dictionary (1913)