What is a succubus?

Answer 1

A Succubus is a demon taking on the form of a beautiful woman. They use their beauty to lure men into their beds were they devour the man's soul to achieve greater power and more beauty. They are created from the impure thoughts and lusts of men.

Answer 2

A succubus (succubi is the plural form) is believed to be a female demon (demons being known as fallen angels). They are believe to visit young men while they are sleeping (usually in the form of erotic dreams) therefore believed to spawn their demonic offspring.

There are some sources that list Adams first mate, Lilith, as a succubus, other sources believe her to be a goddess.

Succubus, a movie directed by Jesus Franco, starring Janine Reynaud, Jack Taylor, & Adrian Hoven, and released in 1968.

Succubus, an erotic movie made in 2006, directed by Jack Hemmingway and starring Raven Riley and Liz Vicious.

Succubus, a female character in World of Warcraft (notably voluptuous) summoned by a "Warlock" spell.

A Swiss Goth-Metal band.