/ Dictionary / Index C cloud grass: Meaning and Definition of Find definitions for: cloud' grass" Pronunciation: [key] a grass, Agrostis nebulosa, of Spain, having clusters of tiny spikelets on slender stalks, used in bouquets. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. clouded sulfur cloudland Related Content Daily Word Quiz: fresco Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language