/ Dictionary / Index H hairworm: Meaning and Definition of Find definitions for: hair•worm Pronunciation: (hâr'wûrm"), [key] — n. any small, slender worm of the family Trichostrongylidae, parasitic in the alimentary canals of various animals. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hairweaving hairy Related Content Daily Word Quiz: slough Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language