/ Dictionary / Index V vernier engine: Meaning and Definition of Find definitions for: ver'nier en'gine Pronunciation: [key] — Rocketry. Rocketry. a small, low-thrust rocket engine for correcting the heading and velocity of a long-range ballistic missile. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. vernier compass vernis martin Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language