Source : Webster's Revised Unabridged Dictionary (1913)

Mad \Mad\, n. [Cf. W. mad a male child, a boy.]
   1. A slattern. [Prov. Eng.]

   2. The name of a female fairy, esp. the queen of the fairies;
      and hence, sometimes, any fairy. --Shak.

Mad \Mad\, obs.
   p. p. of {Made}. --Chaucer.

Mad \Mad\, a. [Compar. {Madder}; superl. {Maddest}.] [AS. gem?d,
   gem[=a]d, mad; akin to OS. gem?d foolish, OHG. gameit, Icel.
   mei?a to hurt, Goth. gam['a]ids weak, broken. ?.]
   1. Disordered in intellect; crazy; insane.

            I have heard my grandsire say full oft, Extremity of
            griefs would make men mad.            --Shak.

   2. Excited beyond self-control or the restraint of reason;
      inflamed by violent or uncontrollable desire, passion, or
      appetite; as, to be mad with terror, lust, or hatred; mad
      against political reform.

            It is the land of graven images, and they are mad
            upon their idols.                     --Jer. 1. 88.

            And being exceedingly mad against them, I persecuted
            them even unto strange cities.        --Acts xxvi.
                                                  11.

   3. Proceeding from, or indicating, madness; expressing
      distraction; prompted by infatuation, fury, or extreme
      rashness. ``Mad demeanor.'' --Milton.

            Mad wars destroy in one year the works of many years
            of peace.                             --Franklin.

            The mad promise of Cleon was fulfilled. --Jowett
                                                  (Thucyd.).

   4. Extravagant; immoderate. ``Be mad and merry.'' --Shak.
      ``Fetching mad bounds.'' --Shak.

   5. Furious with rage, terror, or disease; -- said of the
      lower animals; as, a mad bull; esp., having hydrophobia;
      rabid; as, a mad dog.

   6. Angry; out of patience; vexed; as, to get mad at a person.
      [Colloq.]

   7. Having impaired polarity; -- applied to a compass needle.
      [Colloq.]

   {Like mad}, like a mad person; in a furious manner; as, to
      run like mad. --L'Estrange.

   {To run mad}.
      (a) To become wild with excitement.
      (b) To run wildly about under the influence of
          hydrophobia; to become affected with hydrophobia.

   {To run mad after}, to pursue under the influence of
      infatuation or immoderate desire. ``The world is running
      mad after farce.'' --Dryden.

Mad \Mad\, v. t. [imp. & p. p. {Madded}; p. pr. & vb. n.
   {Madding}.]
   To make mad or furious; to madden.

         Had I but seen thy picture in this plight, It would
         have madded me.                          --Shak.

Mad \Mad\, v. i.
   To be mad; to go mad; to rave. See {Madding}. [Archaic]
   --Chaucer.

         Festus said with great voice, Paul thou maddest.
                                                  --Wyclif
                                                  (Acts).

Mad \Mad\, n. [AS. ma?a; akin to D. & G. made, Goth. mapa, and
   prob. to E. moth.] (Zo["o]l.)
   An earthworm. [Written also {made}.]

Source : WordNet®

mad
     adj 1: roused to anger; "stayed huffy a good while"- Mark Twain;
            "she gets mad when you wake her up so early"; "mad at
            his friend"; "sore over a remark" [syn: {huffy}, {sore}]
     2: affected with madness or insanity; "a man who had gone mad"
        [syn: {brainsick}, {crazy}, {demented}, {distracted}, {disturbed},
         {sick}, {unbalanced}, {unhinged}]
     3: marked by uncontrolled excitement or emotion; "a crowd of
        delirious baseball fans"; "something frantic in their
        gaiety"; "a mad whirl of pleasure" [syn: {delirious}, {excited},
         {frantic}, {unrestrained}]
     4: very foolish; "harebrained ideas"; "took insane risks behind
        the wheel"; "a completely mad scheme to build a bridge
        between two mountains" [syn: {harebrained}, {insane}]
     [also: {madding}, {madded}, {maddest}, {madder}]

Source : Free On-Line Dictionary of Computing

MAD
     
         1. {Michigan Algorithm Decoder}.
     
        2. A {data flow} language.
     
        ["Implementation of Data Structures on a Data Flow Computer",
        D.L. Bowen, Ph.D. Thesis, Victoria U Manchester, Apr 1981].
     
        (1999-12-10)