The definition of "man" can vary depending on the context, but here are a few common definitions:

• Adult Male Human: This is the most common definition, referring to a fully grown human of the male sex.
• Human Being/Humankind: In some contexts, "man" can refer to all of humanity, regardless of sex or age. This usage is becoming less common, with terms like "human," "humanity," or "humankind" being preferred.
• Husband: A man who is married.

For further reading:

1. Oxford English Dictionary: https://www.oed.com/dictionary/man_n