Definition of blight
(Entry 1 of 2)
a : a disease or injury of plants marked by the formation of lesions, withering, and death of parts (such as leaves and tubers) potato blight
b : an organism (such as an insect or a fungus) that causes blight
2 : something that frustrates plans or hopes the blight of poverty an abandoned factory that was a blight on the neighborhood
3 : something that impairs or destroys … censorship … has brought under its blight Ireland's greatest poets, dramatists, and scholars.— Paul Blanshard
4 : a deteriorated condition urban blight
blighted; blighting; blights
Definition of blight (Entry 2 of 2)
1 botany : to affect (a plant) with a disease or injury marked by the formation of lesions, withering, and death of parts (such as leaves and tubers) : to affect with blight (see blight entry 1 sense 1) The apple trees were blighted by fungus.
2 : to impair the quality or effect of the condition that has blighted his son's life— Patricia Guthrie
botany : to suffer from or become affected with blight The potatoes blighted.
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