The Collaborative International Dictionary of English v.0.48:

Human \Hu"man\, a. [L. humanus; akin to homo man: cf. F. humain.
   See Homage, and cf. Humane, Omber.]
   Belonging to man or mankind; having the qualities or
   attributes of a man; of or pertaining to man or to the race
   of man; as, a human voice; human shape; human nature; human
   sacrifices.
   [1913 Webster]

         To err is human; to forgive, divine.     --Pope.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Human \Hu"man\, n.
   A human being. [Colloq.]
   [1913 Webster]

         Sprung of humans that inhabit earth.     --Chapman.
   [1913 Webster]

         We humans often find ourselves in strange position.
                                                  --Prof.
                                                  Wilson.
   [1913 Webster]

WordNet (r) 3.0 (2006):

human
    adj 1: characteristic of humanity; "human nature"
    2: relating to a person; "the experiment was conducted on 6
       monkeys and 2 human subjects"
    3: having human form or attributes as opposed to those of
       animals or divine beings; "human beings"; "the human body";
       "human kindness"; "human frailty" [ant: nonhuman]
    n 1: any living or extinct member of the family Hominidae
         characterized by superior intelligence, articulate speech,
         and erect carriage [syn: homo, man, human being,
         human]

Moby Thesaurus II by Grady Ward, 1.0:

110 Moby Thesaurus words for "human":
   Adamite, Adamitic, Christian, Christlike, Christly, accommodating,
   affectionate, android, anthropocentric, anthropoid,
   anthropological, being, beneficent, benevolent, benign, benignant,
   bleeding, body, brotherly, cat, chap, character, charitable, child,
   clement, commiserative, compassionate, condolent, considerate,
   creature, customer, decent, duck, earthling, earthy, ethological,
   fallible, fellow, finite, fleshly, forbearant, forgiving, frail,
   fraternal, generous, gentle, good, good-natured, gracious,
   groundling, guy, hand, head, hominal, hominid, homo, homocentric,
   human being, humane, humanistic, humanitarian, individual, joker,
   kind, kindhearted, kindly, kindly-disposed, lenient, life,
   living soul, loving, magnanimous, man, man-centered, mankind,
   manlike, melting, merciful, mortal, nice, nose, one, only human,
   party, person, personage, personality, pitying, ruthful, sensitive,
   single, soft, softhearted, somebody, someone, soul, sympathetic,
   sympathizing, tellurian, tender, tenderhearted, terran, unangelic,
   understanding, vulnerable, warm, warmhearted, weak, woman,
   worldling