(Judeo-Christian and Islamic religions) chief spirit of evil and adversary of God; tempter of mankind; master of Hell
"In Judeo-Christian theology, Satan is viewed as the chief spirit of evil who tempts mankind to turn away from God."
A demon follower of Satan (principal evil spirit); a fallen angel.
"The old textile catalog listed several bolts of satan in its inventory from the eighteenth century."
Alternative form of Satan (especially in the sense "a demon follower of Satan; a fallen angel").
Obsolete form of satin.
In plain English: Satan is the name of the main villain who tries to trick people into doing bad things and staying away from God.
"The children were playing hide-and-seek, and everyone was looking for their friend who had become like satan to them because he kept hiding so well."
The supreme evil spirit in the Abrahamic religions, who tempts humanity and rules Hell; the Devil; (in Theistic Satanism) the same figure, regarded as a deity to be revered and worshipped.
"In both traditional theology and certain modern practices, Satan is viewed either as the supreme evil spirit who tempts humanity or as a dark deity worthy of worship in Theistic Satanism."
The word satan comes from the Hebrew term for "adversary" or "accuser." It traveled into English through Latin and Old French before becoming a common name for the devil in Christian tradition.