/ Dictionary / Index H horsehair-blight fungus: Meaning and Definition of Find definitions for: horse'hair-blight fun"gus Pronunciation: (hôrs'hâr"blīt"), [key] a fungal parasite, Marasmius equicrinis, that causes a disease of certain tropical plants, esp. tea. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. horsehair horsehair fungus Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language