/ Dictionary / Index H high-proof: Meaning and Definition of Find definitions for: high-proof Pronunciation: (hī'prf'), [key] — adj. containing a high percentage of alcohol: high-proof spirits. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. high profile high relief Related Content Daily Word Quiz: abyss Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language