A more thorough explanation:

A marriage-brokerage contract is an agreement where a person is paid to find someone for marriage. However, these contracts are usually considered illegal because they go against public policy.

For example, if a man pays a matchmaker to find him a wife, and the matchmaker finds a woman who is willing to marry him, this would be considered a marriage-brokerage contract. Another example would be if a woman pays a matchmaker to find her a husband, and the matchmaker finds a man who is willing to marry her.

These examples illustrate the definition because they show how a person is paid to find someone for marriage, which is the essence of a marriage-brokerage contract. However, as mentioned earlier, these contracts are usually considered illegal because they are against public policy.