incubo, ōnis, m. 1. incubo, one who lies upon any thing. A spirit that watches over buried treasures (post-class.): cum modo incuboni pileum rapuisset, thesaurum invenit, Petr. Fragm. Trag. 38, 8.

— The nightmare, incubus (post-class.): ab incubone deludi, Scrib. Comp. 100: de incubone praesumptio, Tert. Anim. 44.