/ Dictionary / Index W white-knuckle: Meaning and Definition of Find definitions for: white-knuckle Pronunciation: (hwīt'nuk'ul, wīt'-), [key] — adj. Informal. causing fear, apprehension, or panic: The plane made a white-knuckle approach to the fogged-in airport. experiencing fear, terror, or apprehension: The white-knuckle crowd loved that director's newest horror movie. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. white knight white-knuckle paddler Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language