/ Dictionary / Index S stepmother: Meaning and Definition of Find definitions for: step•moth•er Pronunciation: (step'mu"ur), [key] — n. the wife of one's father by a later marriage. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: stepmother (Thesaurus) stepladder Stepney 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