A more thorough explanation:

Definition: Proles (proh-leez) is a Latin word that means offspring. It specifically refers to the children born from a lawful marriage.

• John and Mary had three proles during their marriage.
• The proles of the royal family are expected to follow certain traditions and rules.

The examples illustrate that proles refers to children born from a lawful marriage. In the first example, John and Mary had three children during their marriage, which makes them proles. In the second example, the proles of the royal family are expected to follow certain traditions and rules, which implies that they are legitimate children born from a lawful marriage.