/ Dictionary / Index S screw-off: Meaning and Definition of Find definitions for: screw-off Pronunciation: (skr'ôf", -of"), [key] — n. Slang. a loafer; idler. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. screw nut screw-on Related Content Daily Word Quiz: crutiny Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language