A more thorough explanation:

Definition: A prenup, also known as a prenuptial agreement, is a legal agreement made before marriage that outlines how issues of support and property division will be resolved if the marriage ends in divorce or by the death of a spouse.

For example, a couple may decide to sign a prenup that specifies how their assets will be divided in case of a divorce. This can include property, investments, and other financial assets.

Prenups are often used by couples who want to protect their individual assets or businesses, or who have children from previous relationships that they want to provide for in case of a divorce.

Overall, prenups can provide clarity and peace of mind for couples entering into marriage, but it's important to consult with a lawyer to ensure that the agreement is legally binding and fair to both parties.