/ Dictionary / Index H hair spray: Meaning and Definition of Find definitions for: hair' spray" Pronunciation: [key] a liquid in an aerosol or other spray container, for holding the hair in place. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hairsplitting hairspring Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language