/ Dictionary / Index S sideling: Meaning and Definition of Find definitions for: side•ling Pronunciation: (sīd'ling), [key] — adv. sidelong or sideways; obliquely. —adj. having an oblique position; inclined or sloping. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sideline sidelock 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