/ Dictionary / Index C cloud cover: Meaning and Definition of Find definitions for: cloud' cov"er Pronunciation: [key] a covering of clouds over all or part of the sky. the fraction of sky covered by clouds. Also calledCf. sky cover. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. cloud chamber cloud-cuckoo-land Related Content Daily Word Quiz: jugular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language