Source : Webster's Revised Unabridged Dictionary (1913)

Mogul \Mo*gul"\, n. [From the Mongolian.]
   1. A person of the Mongolian race.

   2. (Railroad) A heavy locomotive for freight traffic, having
      three pairs of connected driving wheels and a two-wheeled
      truck.

   {Great}, or {Grand}, {Mogul}, the sovereign of the empire
      founded in Hindostan by the Mongols under Baber in the
      sixteenth century. Hence, a very important personage; a
      lord; -- sometimes only {mogul}.

Mogul \Mo*gul"\, n. [From the Mongolian.]
   1. A person of the Mongolian race.

   2. (Railroad) A heavy locomotive for freight traffic, having
      three pairs of connected driving wheels and a two-wheeled
      truck.

   {Great}, or {Grand}, {Mogul}, the sovereign of the empire
      founded in Hindostan by the Mongols under Baber in the
      sixteenth century. Hence, a very important personage; a
      lord; -- sometimes only {mogul}.

Mogul \Mo*gul"\, n.
   A great personage; magnate; autocrat.

Source : WordNet®

mogul
     n 1: a bump on a ski slope
     2: a member of the Muslim dynasty that ruled India until 1857
        [syn: {Moghul}]
     3: a very wealthy or powerful businessman; "an oil baron" [syn:
         {baron}, {big businessman}, {business leader}, {king}, {magnate},
         {power}, {top executive}, {tycoon}]