satan Meaning, Definition & Usage

  1. noun (Judeo-Christian and Islamic religions) chief spirit of evil and adversary of God; tempter of mankind; master of Hell
    Devil; Prince of Darkness; Lucifer; the Tempter; Beelzebub; Old Nick.

WordNet

Sa"tan noun
Etymology
Heb. satan an adversary, fr. satan to be adverse, to persecute: cf. GR. , , L. Satan, Satanas.
Definitions
  1. 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.

Webster 1913