Source : Webster's Revised Unabridged Dictionary (1913)

Jihad \Ji*had"\, Jehad \Je*had"\, n. [Ar. jih[=a]d.] (Moham.)
   A religious war against infidels or Mohammedan heretics;
   also, any bitter war or crusade for a principle or belief.

         [Their] courage in war . . . had not, like that of the
         Mohammedan dervishes of the Sudan, or of Mohammedans
         anywhere engaged in a jehad, a religious motive and the
         promise of future bliss behind it.       --James Bryce.

Source : WordNet®

jehad
     n 1: a holy war waged by Muslims against infidels [syn: {jihad},
          {international jihad}]
     2: a holy struggle or striving by a Muslim for a moral or
        spiritual or political goal [syn: {jihad}]