noun

• (obsolete) Tincture; hue; colour.
• (obsolete) Infection; corruption; deprivation.
  "A prison taint was on everything there. The imprisoned air, the imprisoned light, the imprisoned damps, the imprisoned men, were all deteriorated by confinement."
• (programming) A marker indicating that a variable is unsafe and should be subjected to additional security checks.
  "Using Apache version 1.3.29 and Perl version 5.8.2, we tracked the following sequence of taints […]"

verb

• (transitive) To contaminate or corrupt (something) with an external agent, either physically or morally.
  "His unkindness may defeat my life, / But never taint my love."
• (transitive) To spoil (food) by contamination.
• (intransitive) To be infected or corrupted; to be touched by something corrupting.
  "I cannot taint with fear."
• (intransitive) To be affected with incipient putrefaction.
  "Meat soon taints in warm weather."

verb

• (transitive) To damage, as a lance, without breaking it; also, to break, as a lance, but usually in an unknightly or unscientific manner.
  "Do not fear; I have / A staff to taint, and bravely."
• (intransitive) To thrust ineffectually with a lance.

noun

• (US, vulgar, slang) The perineum.
  "Sorry you feel that way. But since your mother sucks cocks in hell if I go there I won't be rotting.....I'll be on line right behind you hoping to get another good head job from your Mom or Sister....if you can remember which is which.......(Moms the one with the beard on her taint)"