/ Dictionary / Index A all clear: Meaning and Definition of Find definitions for: all' clear' Pronunciation: [key] the signal that an air raid or other danger is over. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. allay all-day Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language