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