/ Dictionary / Index C chestnut blight: Meaning and Definition of Find definitions for: chest'nut blight" Pronunciation: [key] — Plant Pathol. Plant Pathol. a disease of chestnuts, esp. the American chestnut, characterized by bark lesions that girdle and eventually kill the tree, caused by a fungus, Endothia parasitica. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. chestnut chestnut bottle Related Content Daily Word Quiz: loathe Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language