Source : Webster's Revised Unabridged Dictionary (1913)

Brown \Brown\, n.
   A dark color inclining to red or yellow, resulting from the
   mixture of red and black, or of red, black, and yellow; a
   tawny, dusky hue.

Brown \Brown\, a. [Compar. {Browner}; superl. {Brownest}.] [OE.
   brun, broun, AS. br?n; akin to D. bruin, OHG. br?n, Icel.
   br?nn, Sw. brun, Dan. bruun, G. braun, Lith. brunas, Skr.
   babhru. [root]93, 253. Cf. {Bruin}, {Beaver}, {Burnish},
   {Brunette}.]
   Of a dark color, of various shades between black and red or
   yellow.

         Cheeks brown as the oak leaves.          --Longfellow.

   {Brown Bess}, the old regulation flintlock smoothbore musket,
      with bronzed barrel, formerly used in the British army.

   {Brown bread}
   (a) Dark colored bread; esp. a kind made of unbolted wheat
       flour, sometimes called in the United States Graham
       bread. ``He would mouth with a beggar though she smelt
       brown bread and garlic.'' --Shak.
   (b) Dark colored bread made of rye meal and Indian meal, or
       of wheat and rye or Indian; rye and Indian bread. [U.S.]
       

   {Brown coal}, wood coal. See {Lignite}.

   {Brown hematite} or {Brown iron ore} (Min.), the hydrous iron
      oxide, limonite, which has a brown streak. See {Limonite}.
      

   {Brown holland}. See under {Holland}.

   {Brown paper}, dark colored paper, esp. coarse wrapping
      paper, made of unbleached materials.

   {Brown spar} (Min.), a ferruginous variety of dolomite, in
      part identical with ankerite.

   {Brown stone}. See {Brownstone}.

   {Brown stout}, a strong kind of porter or malt liquor.

   {Brown study}, a state of mental abstraction or serious
      reverie. --W. Irving.

Brown \Brown\, v. t. [imp. & p. p. {Browned}; p. pr. & vb. n.
   {Browning}.]
   1. To make brown or dusky.

            A trembling twilight o'er welkin moves, Browns the
            dim void and darkens deep the groves. --Barlow.

   2. To make brown by scorching slightly; as, to brown meat or
      flour.

   3. To give a bright brown color to, as to gun barrels, by
      forming a thin coat of oxide on their surface. --Ure.

Brown \Brown\, v. i.
   To become brown.

Source : WordNet®

brown
     adj : of a color similar to that of wood or earth [syn: {brownish},
            {dark-brown}]

brown
     n 1: an orange of low brightness and saturation [syn: {brownness}]
     2: Scottish botanist who first observed the movement of small
        particles in fluids now known a Brownian motion
        (1773-1858) [syn: {Robert Brown}]
     3: abolitionist who was hanged after leading an unsuccessful
        raid at Harper's Ferry, Virginia (1800-1858) [syn: {John
        Brown}]
     4: a university in Rhode Island [syn: {Brown University}]

brown
     v : fry in a pan until it changes color; "brown the meat in the
         pan"