Final answer:
The word "male" first appeared in the Constitution after the Civil War, specifically in the Fourteenth Amendment.
Step-by-step explanation:
The word "male" first appeared in the Constitution after the Civil War. Specifically, it was introduced in the Fourteenth Amendment, which was ratified in 1868. This amendment granted citizenship and equal protection under the law to all persons born or naturalized in the United States, and it included the word "male" when referring to citizens.