1. [n]  an orange of low brightness and saturation
2. [n]  abolitionist who was hanged after leading an unsuccessful raid at Harper's Ferry, Virginia (1800-1858)
3. [n]  Scottish botanist who first observed the movement of small particles in fluids now known a Brownian motion (1773-1858)
4. [adj]  of a color similar to that of wood or earth
5. [v]  fry in a pan until it changes color; "brown the meat in the pan"

Brown
In BROWN, Rodriguez explores the impact of Hispanics in the U.S. today, points out that while Hispanics become Americanized, the U.S. itself gets Latinized, and in effect argues for a rethinking of the national complexion. A New York Times Notable Book of 2002.

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1. \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.
   

2. \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.
   

3. \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.
   

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