/ Dictionary / Index C crack of dawn: Meaning and Definition of Find definitions for: crack' of dawn' Pronunciation: [key] the part of morning when light first appears in the sky. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cracknel crack of doom Related Content Daily Word Quiz: lunar Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language