/ Dictionary / Index G gray nurse shark: Meaning and Definition of Find definitions for: gray' nurse' shark" Pronunciation: [key] a sand shark, Odontaspis arenarius, abundant in S African and Australian coastal waters and estuaries. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. gray mullet gray ox Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language