WordNet sense 1 (a manservant who acts as a personal attendant to his employer):

gentleman, valet, gentleman's gentleman, valet de chambre

WordNet sense 2 (someone who serves in the armed forces; a member of a military force):

serviceman, military personnel, military man

WordNet sense 3 (an adult person who is male (as opposed to a woman)):

adult male

WordNet sense 4 (one of the British Isles in the Irish Sea):

Isle of Man

WordNet sense 5 (game equipment consisting of an object used in playing certain board games):

piece

WordNet sense 6 (all of the living human inhabitants of the earth):

humanity, humankind, mankind, world, humans, human beings, human race

WordNet sense 7 (any living or extinct member of the family Hominidae characterized by superior intelligence, articulate speech, and erect carriage):

homo, human, human being