Source : Webster's Revised Unabridged Dictionary (1913)

Humankind \Hu"man*kind`\, n.
   Mankind. --Pope.

Source : WordNet®

humankind
     n : all of the inhabitants of the earth; "all the world loves a
         lover"; "she always used `humankind' because `mankind'
         seemed to slight the women" [syn: {world}, {human race},
         {humanity}, {human beings}, {humans}, {mankind}, {man}]