/ Dictionary / Index C cold one: Meaning and Definition of Find definitions for: cold' one" Pronunciation: [key] — Informal. Informal. a glass, can, or bottle of cold beer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cold light cold pack Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language