A more thorough explanation:

Definition: Progeny refers to the children or descendants of a person or animal. It can also refer to a line of precedents that follow a leading case.

• She was proud of her progeny, which included three successful children and six grandchildren.
• The champion racehorse produced many successful progeny that went on to win races.
• The Supreme Court case of Brown v. Board of Education and its progeny established the legal precedent for desegregation in schools.

The first two examples illustrate the literal meaning of progeny, referring to the offspring of a person or animal. The third example illustrates the figurative meaning of progeny, referring to a line of legal precedents that follow a leading case.