A more thorough explanation:

Definition: Free law refers to the civil rights that were enjoyed by a freeman, who was not a serf. These rights could be forfeited if the freeman was convicted of treason or an infamous crime.

Example: In medieval Europe, serfs were bound to the land and had very few rights. Freemen, on the other hand, were not tied to the land and had more freedom. They were able to own property, marry who they chose, and travel freely. However, if a freeman committed a serious crime, such as treason, they could lose their free law and become a serf.

Explanation: This example illustrates how free law was a privilege enjoyed by freemen in medieval Europe. It also shows how this privilege could be taken away if the freeman committed a serious crime. This demonstrates the importance of following the laws and rules of society in order to maintain one's rights and freedoms.