sandbox
n.
(also `sandbox, the')
1. Common term for the R&D department at many software and computer companies (where hackers in commercial environments are likely to be found). Half-derisive, but reflects the truth that research is a form of creative play. Compare playpen.
3. A controlled environment within which potentially dangerous programs are run. Used esp. in reference to Java implementations.
4. A checked-out copy of a source tree, on which one may safely perform builds without interfereing with others.
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