/ Dictionary / Index T thrust fault: Meaning and Definition of Find definitions for: thrust' fault" Pronunciation: [key] — Geol. Geol. a low-angle reverse fault produced in rocks subjected to thrust. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. thruster thrust stage Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language