/ Dictionary / Index S sideburns: Meaning and Definition of Find definitions for: side•burns Pronunciation: (sīd'bûrnz"), [key] — n.pl. short whiskers extending from the hairline to below the ears and worn with an unbearded chin. the projections of the hairline forming a border on the face in front of each ear. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sideburns (Thesaurus) sidebone sidecar Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language