/ Dictionary / Index C coil spring: Meaning and Definition of Find definitions for: coil' spring" Pronunciation: [key] any spring of wire coiled helically, having a cylindrical or conical outline. See illus. under Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. coil Coimbatore Related Content Daily Word Quiz: fresco Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language