Pronunciation: (blīt),[key] —n. 1. Plant Pathol. a. the rapid and extensive discoloration, wilting, and death of plant tissues.
b. a disease so characterized.
2. any cause of impairment, destruction, ruin, or frustration: Extravagance was the blight of the family. 3. the state or result of being blighted or deteriorated; dilapidation; decay: urban blight.
—v.t. 1. to cause to wither or decay; blast: Frost blighted the crops. 2. to destroy; ruin; frustrate: Illness blighted his hopes.