grounding

Fundamental knowledge or background in a field or discipline.

The readers to whom the book is principally addressed, B.R. drivers and trainee drivers, have at last been provided with a clearly written and exceptionally well-illustrated handbook of diesel locomotive practice, combining a grounding in the basic principles of the internal combustion engine with a clear exposition of electrical machines and circuitry such as is not found in most textbooks.

The return to a fully conscious state after a psychedelic experience.

The collision of a ship with ground beneath the surface of the water.

The prevention of aircraft takeoff because of government action.

The interconnecting metal chassis or frame of a device, appliance, machine, or metal raceway via a designated conductor to earth at the service panel. It may be bare or covered, and does not carry current in normal operation.