man

The word "man" can work in several ways. Most often, it is a noun meaning an adult male human being, as in "The man by the door smiled at us." This is still the main everyday meaning.

Older English also used "man" more broadly to mean a human being in general or the whole human race. You still see this in older writing, set phrases, and titles such as "the rights of man" or "since the dawn of man." In modern English, this use is less common because many speakers prefer more inclusive words like "people," "humanity," or "humankind."

"Man" can also be a verb. If you "man a booth," "man the phones," or "man the controls," you work there, take that position, or operate the equipment. In this sense, the word is about a person filling a role, not specifically about gender.

The word appears in many fixed expressions. A "man of action" is someone who does things quickly and directly. A "self-made man" is someone who became successful through their own effort. A "one-man show" is something done by one person alone. In some games, especially older descriptions of chess, checkers, or similar games, the pieces are called "men."

So while the most common meaning is simple, the word has a long history and a wider range of uses than it first seems to have.