What do you mean when we say hat an object is grouded?

In Electronics, a "grounded" object is one that is connected to the ground through a connection that allows electricity to flow the ground. In some circumstances, for instance in a car, the rubber wheels make the car isolated from the ground, but electrically a large piece of metal can be called the ground, like the engine block or body of the car. ground in electronics is somtimes spelled GND.