Sĭe'en-bĭs, n.
n. [See supra.]
Sense 1. A pretended demon; succuba. “A church-yard carcass raised and set a strutting by the inflation of some hellish succubus within.” Warburton.
Sense 2. (Med.) (a.) Nightmare. (b.) An imaginary female with whom a man in his sleep seems to have sexual intercourse. Dunglison.