Meaning

• An adult male human.

  "The show is especially popular with middle-aged men."

• (collective) All human males collectively: mankind.

• A human, a person of either gender, usually an adult. (See usage notes.)

  "every man for himself"

• (collective) All humans collectively: mankind, humankind, humanity. (Sometimes capitalized as Man.)

• A member of the genus Homo, especially of the species Homo sapiens.

• An male person, usually an adult; a (generally adult male) sentient being, whether human, supernatural, elf, alien, etc.

• An adult male who has, to an eminent degree, qualities considered masculine, such as strength, integrity, and devotion to family; a mensch.

• Manliness; the quality or state of being manly.

• A husband.

• A lover; a boyfriend.

• A male enthusiast or devotee; a male who is very fond of or devoted to a specified kind of thing. (Used as the last element of a compound.)

  "Some people prefer apple pie, but me, I’m a cherry pie man."

• A person, usually male, who has duties or skills associated with a specified thing. (Used as the last element of a compound.)

  "I wanted to be a guitar man on a road tour, but instead I’m a flag man on a road crew."

• A person, usually male, who can fulfill one's requirements with regard to a specified matter.

• A male who belongs to a particular group: an employee, a student or alumnus, a representative, etc.

• An adult male servant.

• A vassal; a subject.

  "Like master, like man."

• A piece or token used in board games such as chess.

• Used to refer to oneself or one's group: I, we; construed in the third person.

• A term of familiar address often implying on the part of the speaker some degree of authority, impatience, or haste.

  "Come on, man, we've got no time to lose!"

• A friendly term of address usually reserved for other adult males.

  "Hey, man, how's it goin'?"

• A player on whom another is playing, with the intent of limiting their attacking impact.

Meaning

• Used to place emphasis upon something or someone; sometimes, but not always, when actually addressing a man.

  "Man, that was a great catch!"