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: an evil spirit that lies on persons in their sleep
: one that has sexual intercourse with women while they are sleeping — compare succubus
: nightmare sense 2
: one that oppresses or burdens like a nightmare
13th century, in the meaning defined at sense 1
Middle English, from Late Latin, from Latin incubare
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More Definitions for incubus
: an evil spirit at one time thought to lie on persons in their sleep
: one thought to have sexual intercourse with sleeping women — compare succubus
More from Merriam-Webster on incubus
Britannica.com: Encyclopedia article about incubus
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