The hardware system and the system software used by a computer program.

1. Any level or almost level surface; a small plateau.

2. A continental area covered by relatively flat or gently tilted, mainly sedimentary strata which overlay a basement of rocks consolidated during earlier deformations; platforms and shields together constitute cratons.

A wooden floor on the side of a gangway at the bottom of an inclined seam, to which the coal runs by gravity, and from which it is shoveled into mine cars.

1. Temporary or permanent solid bed on which artillery pieces are supported to give greater stability.

2. Metal stand at the base of some types of guns upon which the gun crew stands while serving the gun.