The most common meaning for Lucifer in English is as a name for the Devil in Christian theology. It appeared in the King James Version of the Bible in Isaiah and before that in the Vulgate (the late-4th-century Latin translation of the Bible), not as the name of a devil but as the Latin word lucifer (uncapitalized), meaning "the morning star", "the planet Venus", or, as an adjective, "light-bringing". It is a translation of the Hebrew word הֵילֵל, hêlēl, meaning "Shining One". .
https://en.wikipedia.org/wiki/Lucifer