/ Dictionary / Index H head register: Meaning and Definition of Find definitions for: head' reg"ister Pronunciation: [key] the high register of the human voice. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. headrail headrest Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language