/ Dictionary / Index T twin-engine: Meaning and Definition of Find definitions for: twin-en•gine Pronunciation: (twin'en'jun), [key] — adj. having two engines of equal power as prime movers: a twin-engine airplane. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. twine Twin Falls Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language