/ Dictionary / Index U uncoil: Meaning and Definition of Find definitions for: un•coil Pronunciation: (un-koil'), [key] — v.t., v.i. to unwind from a coiled position. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: uncoil (Thesaurus) uncoffined uncollateralized Related Content Daily Word Quiz: pristine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language