From The Collaborative International Dictionary of English v.0.48 [gcide]:
Humankind \Hu"man*kind`\, n.
Mankind. --Pope.
[1913 Webster]
From WordNet (r) 3.0 (2006) [wn]:
humankind
n 1: all of the living human 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, humankind, human beings, humans,
mankind, man]