Breadcrumb Home > Thesaurus > S Synonyms of sandbox Find synonyms for: Noun 1. sandbox, mold, mould, cast usage: mold consisting of a box with sand shaped to mold metal 2. sandbox, sandpile, sandpit, plaything, toy usage: a plaything consisting of a pile of sand or a box filled with sand for children to play in WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of sandbox (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: apotheosis Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language