The Collaborative International Dictionary of English v.0.48:

Want \Want\, v. t. [imp. & p. p. Wanted; p. pr. & vb. n.
   Wanting.]
   [1913 Webster]
   1. To be without; to be destitute of, or deficient in; not to
      have; to lack; as, to want knowledge; to want judgment; to
      want learning; to want food and clothing.
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            They that want honesty, want anything. --Beau. & Fl.
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            Nor think, though men were none,
            That heaven would want spectators, God want praise.
                                                  --Milton.
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            The unhappy never want enemies.       --Richardson.
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   2. To have occasion for, as useful, proper, or requisite; to
      require; to need; as, in winter we want a fire; in summer
      we want cooling breezes.
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   3. To feel need of; to wish or long for; to desire; to crave.
      " What wants my son?" --Addison.
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            I want to speak to you about something. --A.
                                                  Trollope.
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The Collaborative International Dictionary of English v.0.48:

Wanting \Want"ing\, a.
   Absent; lacking; missing; also, deficient; destitute; needy;
   as, one of the twelve is wanting; I shall not be wanting in
   exertion.
   [1913 Webster]
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WordNet (r) 3.0 (2006):

wanting
    adj 1: nonexistent; "the thumb is absent"; "her appetite was
           lacking" [syn: lacking, absent, missing, wanting]
    2: inadequate in amount or degree; "a deficient education";
       "deficient in common sense"; "lacking in stamina"; "tested
       and found wanting" [syn: deficient, lacking(p),
       wanting(p)]