incubus

in·cu·bus

(in'kū-bŭs),

Originally, an evil spirit that would lie on and oppress sleeping people; especially, a male spirit that copulated with sleeping women. Compare: succubus.

[L. fr. incubo, to lie on]

Farlex Partner Medical Dictionary © Farlex 2012

incubus

(1) An evil (male) spirit that copulates with sleeping women. 
(2) An erotic nightmare occurring in a sexually repressed female.

Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

in·cu·bus

(in'kyū-bŭs)

1. Originally, an evil spirit that lay on and oppressed sleeping people, especially, a male spirit that copulated with sleeping women.
Compare: succubus

2. Synonym(s): nightmare.

[L. fr. incubo, to lie on]

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

incubus

(ĭn′kū-bŭs) [L. incubare, to lie upon]

A nightmare.

Medical Dictionary, © 2009 Farlex and Partners