/ Dictionary / Index S spark coil: Meaning and Definition of Find definitions for: spark' coil" Pronunciation: [key] — Elect. Elect. a coil of many turns of insulated wire on an iron core, used for producing sparks. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. spark chamber sparker 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