Another name for Satan.
A name, traditional in Christianity, for the leader of the devils, an angel who was cast from heaven into hell because he rebelled against God. Lucifer is usually identified with Satan. The name Lucifer, which means “bearer of light” or “morning star,” refers to his former splendor as the greatest of the angels.
brilliant star, a title given to the king of Babylon (Isa. 14:12) to denote his glory.