a shallow box or hollow in the ground partly filled with sand for children to play in; a sandpit

a testing environment in a computer system in which new or untested software or coding can be run securely

a box containing sand, especially one kept on a train to hold sand for sprinkling on to slippery rails

a tropical American tree whose seed cases were formerly used to hold sand for blotting ink

isolate (a piece of software) so that it can access only certain resources, programs, and files within a computer system

the apps you install on your device are sandboxed