Dictionary

To connect (an electrical conductor or device) to a ground.

To punish, especially a child or teenager, by forcing him/her to stay at home and/or give up certain privileges.

Example: Eric, you are grounded until further notice for lying to us about where you were last night!

To forbid (an aircraft or pilot) to fly.

Example: Because of the bad weather, all flights were grounded.

To give a basic education in a particular subject; to instruct in elements or first principles.

Example: Jim was grounded in maths.

Fundamental knowledge or background in a field or discipline.

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.