Source : Webster's Revised Unabridged Dictionary (1913)

Kami \Ka"mi\, n. pl. [Japanese.]
   A title given to the celestial gods of the first mythical
   dynasty of Japan and extended to the demigods of the second
   dynasty, and then to the long line of spiritual princes still
   represented by the mikado.

Source : WordNet®

Kami
     n : one the Shinto deities (including mythological beings,
         spirits of distinguished men, forces of nature)