Source : Webster's Revised Unabridged Dictionary (1913)

Jainism \Jain"ism\, n.
   The heterodox Hindoo religion, of which the most striking
   features are the exaltation of saints or holy mortals, called
   jins, above the ordinary Hindoo gods, and the denial of the
   divine origin and infallibility of the Vedas. It is
   intermediate between Brahmanism and Buddhism, having some
   things in common with each.

Source : WordNet®

Jainism
     n 1: sect founded in the 6th century BC as a revolt against
          Hinduism
     2: religion founded in the 6th century BC as a revolt against
        Hinduism; emphasizes asceticism and immortality and
        transmigration of the soul; denies existence of a perfect
        or supreme being