/ Dictionary / Index S sidekick: Meaning and Definition of Find definitions for: side•kick Pronunciation: (sīd'kik"), [key] — n. a close friend. a confederate or assistant. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sidekick (Thesaurus) side horse sidelight Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language