Source : Webster's Revised Unabridged Dictionary (1913)

Koran \Ko"ran\ (?; 277), n. [Ar. gor[=a]n. See {Alcoran}.]
   The Scriptures of the Mohammedans, containing the professed
   revelations to Mohammed; -- called also {Alcoran}. [Written
   also {Kuran} or {Quran}.]

Source : WordNet®

Koran
     n : the sacred writings of Islam revealed by God to the prophet
         Muhammad during his life at Mecca and Medina [syn: {Quran},
          {al-Qur'an}, {Book}]