A more thorough explanation:

EXRX

EXRX is an abbreviation for "EXECUTRIX," which refers to a female executor of a will.

When John passed away, he named his daughter as the EXRX of his will. She was responsible for carrying out his final wishes and distributing his assets to his beneficiaries.

Another example could be: After her husband's death, Mary became the EXRX of his estate. She had to manage his finances, pay off his debts, and distribute his property according to his will.

These examples illustrate how EXRX is used to refer to a female executor of a will. It is important to note that the term "executrix" is not commonly used anymore, and "executor" is now considered a gender-neutral term.