/ Dictionary / Index S screwball: Meaning and Definition of Find definitions for: screw•ball Pronunciation: (skr'bôl"), [key] — n. an eccentric or whimsically eccentric person; a nut. a pitched ball that curves toward the side of the plate from which it was thrown. —adj. eccentric or whimsically eccentric: What a screwball idea! Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: screwball (Thesaurus) screw axis screw bean Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language