/ Dictionary / Index G gray urn: Meaning and Definition of Find definitions for: gray' urn' Pronunciation: [key] a smooth, urn-shaped edible mushroom, Urnula craterium, commonly found in North America on fallen hardwood. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. gray trout graywacke 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