Overturning something means causing it to be reversed, invalidated, or flipped from its previous state. It can apply in several common contexts:

• Legal or formal decisions: A higher authority or court nullifies or reverses a prior ruling or verdict. For example, an appellate court may overturn a conviction or a lower court’s decision.
• Physical objects or states: An item is turned over or flipped onto its other side or on its top, such as a car that overturns or a bowl that is overturned.
• Structural or policy contexts: A government, policy, or rule can be overturned, meaning its authority or effect is removed or replaced.

If you’d like, I can tailor the explanation to a specific context (law, sports, politics, everyday objects) or provide examples illustrating each use.