Definitions
1.nounAny of many plant diseases causing damage to, or the death of, leaves, fruit or other parts.
2.nounThe bacterium, virus or fungus that causes such a condition.
3.noun(by extension) Anything that impedes growth or development or spoils any other aspect of life.
4.verbTo affect with blight; to blast; to prevent the growth and fertility of.
5.verbTo suffer blight."This vine never blights."
6.verbTo spoil or ruin (something)."Those obscene tattoos are going to blight your job prospects."