/ Dictionary / Index H hearing aid: Meaning and Definition of Find definitions for: hear'ing aid" Pronunciation: [key] a compact electronic amplifier worn to improve one's hearing, usually placed in or behind the ear. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hearing hearing-ear dog Related Content Daily Word Quiz: inutiae Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language