/ Dictionary / Index H Heiduc: Meaning and Definition of Find definitions for: Hei•duc Pronunciation: (hī'dook), [key] — n. Haiduk. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Heidi heifer Related Content Daily Word Quiz: ingenuity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language