Source : Webster's Revised Unabridged Dictionary (1913)

Faint \Faint\ (f[=a]nt), a. [Compar. {Fainter} (-[~e]r); superl.
   {Faintest}.] [OE. feint, faint, false, faint, F. feint, p. p.
   of feindre to feign, suppose, hesitate. See {Feign}, and cf.
   {Feint}.]
   1. Lacking strength; weak; languid; inclined to swoon; as,
      faint with fatigue, hunger, or thirst.

   2. Wanting in courage, spirit, or energy; timorous; cowardly;
      dejected; depressed; as, ``Faint heart ne'er won fair
      lady.'' --Old Proverb.

   3. Lacking distinctness; hardly perceptible; striking the
      senses feebly; not bright, or loud, or sharp, or forcible;
      weak; as, a faint color, or sound.

   4. Performed, done, or acted, in a weak or feeble manner; not
      exhibiting vigor, strength, or energy; slight; as, faint
      efforts; faint resistance.

            The faint prosecution of the war.     --Sir J.
                                                  Davies.

Faint \Faint\, v. t.
   To cause to faint or become dispirited; to depress; to
   weaken. [Obs.]

         It faints me to think what follows.      --Shak.

Faint \Faint\, n.
   The act of fainting, or the state of one who has fainted; a
   swoon. [R.] See {Fainting}, n.

         The saint, Who propped the Virgin in her faint. --Sir
                                                  W. Scott.

Faint \Faint\, v. i. [imp. & p. p. {Fainted}; p. pr. & vb. n.
   {Fainting}.]
   1. To become weak or wanting in vigor; to grow feeble; to
      lose strength and color, and the control of the bodily or
      mental functions; to swoon; -- sometimes with away. See
      {Fainting}, n.

            Hearing the honor intended her, she fainted away.
                                                  --Guardian.

            If I send them away fasting . . . they will faint by
            the way.                              --Mark viii.
                                                  8.

Source : WordNet®

faint
     adj 1: barely perceptible; lacking clarity or brightness or
            loudness etc; "a faint outline"; "the wan sun cast
            faint shadows"; "the faint light of a distant candle";
            "faint colors"; "a faint hissing sound"; "a faint
            aroma"
     2: lacking clarity or distinctness; "a dim figure in the
        distance"; "only a faint recollection"; "shadowy figures
        in the gloom"; "saw a vague outline of a building through
        the fog"; "a few wispy memories of childhood" [syn: {dim},
         {shadowy}, {vague}, {wispy}]
     3: lacking strength or vigor; "damning with faint praise";
        "faint resistance"; "feeble efforts"; "a feeble voice"
        [syn: {feeble}]
     4: weak and likely to lose consciousness; "suddenly felt faint
        from the pain"; "was sick and faint from hunger"; "felt
        light in the head"; "a swooning fit"; "light-headed with
        wine"; "light-headed from lack of sleep" [syn: {light}, {swooning},
         {light-headed}, {lightheaded}]
     5: indistinctly understood or felt or perceived; "a faint clue
        to the origin of the mystery"; "haven't the faintest idea"
     6: lacking conviction or boldness or courage; "faint heart
        ne'er won fair lady" [syn: {fainthearted}, {timid}]

faint
     n : a spontaneous loss of consciousness caused by insufficient
         blood to the brain [syn: {swoon}, {syncope}, {deliquium}]

faint
     v : pass out from weakness, physical or emotional distress due
         to a loss of blood supply to the brain [syn: {conk}, {swoon},
          {pass out}]