A more thorough explanation:

Definition: rei (ree-I).pl.REUS.

Explanation: REI is a Latin term that means "thing" or "property". It is often used in legal contexts to refer to an object or item that is the subject of a legal dispute or transaction.

Example: In a contract for the sale of a house, the REI would be the property being sold.

Example: In a lawsuit over a car accident, the REI would be the damaged vehicle.

Illustration: These examples show how REI is used to refer to the specific object or item that is the focus of a legal matter. It helps to clarify what is being discussed and ensures that everyone involved in the legal process is on the same page.