/ Dictionary / Index H head smut: Meaning and Definition of Find definitions for: head' smut" Pronunciation: [key] — Plant Pathol. Plant Pathol. a disease of cereals and other grasses, characterized by a dark-brown, powdery mass of spores replacing the affected seed heads, caused by any of several smut fungi of the genera Sorosporium, Sphacelotheca, and Ustilago. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. headsman heads or tails Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language