mold consisting of a box with sand shaped to mold metal
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a plaything consisting of a pile of sand or a box filled with sand for children to play in
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In response to Pennsylvania environmental officials' belief that field trials are more reliable than laboratory tests, Chambers recently joined with University of Texas civil engineers to develop the infiltrameter, which looks like a big sandbox.
Undirected or "sandbox" research tends not to produce dramatic results; goal-oriented research does.
No Greener Pastures In one aspect of my growing up Very little change did result: In the sandbox all day as a kid, And in the sand trap as an adult.
The sandbox is accustomed to the real-life war machine.