/ Dictionary / Index T twin-screw: Meaning and Definition of Find definitions for: twin-screw Pronunciation: (twin'skr'), [key] — adj. Naut. (of a vessel) having two screw propellers, which usually revolve in opposite directions. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. twin room twin-size Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language