A more thorough explanation:

Definition: Oredelf (or-delf) is a historical term that refers to the right of a landowner to dig for mineral ore on their own land.

Example: In medieval times, many landowners had the right of oredelf on their property. This meant that they could mine for valuable minerals such as gold, silver, and copper without interference from the government or other landowners.

Explanation: The example illustrates how oredelf was a valuable right for landowners in the past. It allowed them to extract valuable resources from their land and potentially make a profit from selling them. This right was often granted by the monarch or other ruling authority and was seen as a way to encourage mining and economic growth.