the mind > emotion > fear > quality of inspiring fear > quality of being eerie > [noun] > nightmare or incubus (4)
A spirit believed to produce a feeling of suffocation in a sleeping person or animal; a feeling of suffocation experienced during sleep; an…
A feeling of oppression during sleep, as of some heavy weight on the chest and stomach; the nightmare.
Originally (usually with the): a feeling of suffocation or great distress experienced during sleep. Now usually: a bad dream producing these or…