A more thorough explanation:

Definition: Droit coutumier is a French term that refers to the common law.

Example: In the United States, the common law system is used to interpret and apply laws. This means that judges rely on previous court decisions to make decisions in current cases.

The example illustrates how the common law system, or droit coutumier, works in the United States. It shows how judges use past cases to make decisions in current cases, rather than relying solely on written laws or statutes.