taint

Short definition from Wiktionary

Noun

1. 1
   A contamination, decay or putrefaction, especially in food.
2. 2
   A tinge, trace or touch.
3. 3
   A mark of disgrace, especially on one's character; blemish.
4. 4
   Tincture; hue; colour.
5. 5
   Infection; corruption; deprivation.
6. 6
   A marker indicating that a variable is unsafe and should be subjected to additional security checks.
7. 7
   A thrust with a lance, which fails of its intended effect.
8. 8
   An injury done to a lance in an encounter, without its being broken; also, a breaking of a lance in an encounter in a dishonorable or unscientific manner.
9. 9
   The perineum.

Verb

1. 1
   To contaminate or corrupt (something) with an external agent, either physically or morally.
2. 2
   To spoil (food) by contamination.
3. 3
   To be infected or corrupted; to be touched by something corrupting.
4. 4
   To be affected with incipient putrefaction.
5. 5
   To mark (a variable) as unsafe, so that operations involving it are subject to additional security checks.
6. 6
   To invalidate (a share capital account) by transferring profits into it.
7. 7
   To damage, as a lance, without breaking it; also, to break, as a lance, but usually in an unknightly or unscientific manner.
8. 8
   To thrust ineffectually with a lance.

Contraction

1. 1
   Alternative spelling of 'taint.