/ Dictionary / Index H hackleback: Meaning and Definition of Find definitions for: hack•le•back Pronunciation: (hak'ul-bak"), [key] — n. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hackle hackle fly Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language