/ Dictionary / Index H hair seal: Meaning and Definition of Find definitions for: hair' seal" Pronunciation: [key] any of various seals having coarse hair and no soft underfur. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hairsbreadth hair shirt 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