/ Dictionary / Index S sandbox: Meaning and Definition of Find definitions for: sand•box Pronunciation: (sand'boks"), [key] — n. a box or receptacle for holding sand, esp. one large enough for children to play in. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: sandbox (Thesaurus) sand bluestem sandbox tree Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language