nounpl. -·buses or -·bi·
- Folklore an evil spirit or demon who has sexual intercourse with sleeping women
- a nightmare
- anything oppressive; burden
Origin of incubusMiddle English from LL, nightmare (in ML, demon supposed to cause nightmares) from Classical Latin incubare: see incubate
nounpl. in·cu·bus·es, or in·cu·bi
- An evil spirit supposed to descend upon and have sexual intercourse with women as they sleep.
- A nightmare.
- An oppressive or nightmarish burden.
Origin of incubusMiddle English from Late Latin alteration of Latin incubō from incubāre to lie down on ; see incubate .
(plural incubi or incubuses)
From Late Latin incubus, from Latin incubo (“nightmare, one who lies down on the sleeper”), from incubāre (“to lie upon, to hatch”), from in- (“on”) + cubāre (“to lie”).