/ Dictionary / Index S side street: Meaning and Definition of Find definitions for: side' street" Pronunciation: [key] a street leading away from a main street; an unimportant street or one carrying but little traffic. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sidestream smoke sidestroke Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language