/ Dictionary / Index S step-in: Meaning and Definition of Find definitions for: step-in Pronunciation: (step'in"), [key] — adj. (of garments, shoes, etc.) put on by being stepped into. —n. panties, esp. bias-cut panties with wide legs worn by women in the 1920s and 1930s. any step-in garment. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: step-in (Thesaurus) Stephenville stepladder Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language