Source : Webster's Revised Unabridged Dictionary (1913)

Satan \Sa"tan\, n. [Heb. s[=a]t[=a]n an adversary, fr. s[=a]tan
   to be adverse, to persecute: cf. Gr. ?, ?, L. Satan,
   Satanas.]
   The grand adversary of man; the Devil, or Prince of darkness;
   the chief of the fallen angels; the archfiend.

         I beheld Satan as lightning fall from heaven. --Luke x.
                                                  18.

Source : WordNet®

Satan
     n : (Judeo-Christian and Islamic religions) chief spirit of evil
         and adversary of God; tempter of mankind; master of Hell
         [syn: {Old Nick}, {Devil}, {the Devil}, {Lucifer}, {Beelzebub},
          {the Tempter}, {Prince of Darkness}]

Source : Free On-Line Dictionary of Computing

SATAN
     
        {Security Administrator's Integrated Network Tool}