Noun

1. A children's play area consisting of a box filled with sand.
2. On many Wikis, the sandbox is a page where users are free to experiment with codes without destroying or damaging any legitimate content.
3. An isolated area where a program can be executed with a restricted portion of the resources available.

   Running a program in a sandbox can prevent it from doing any damage to the system.

Verb

1. To restrict (a program, etc.) by placing it in a sandbox.