A fiend or incubus formerly supposed to cause trouble in sleep.
A condition in sleep usually caused by improper eating or by digestive or nervous troubles, and characterized by a sense of extreme uneasiness or discomfort (as of weight on the chest or stomach, impossibility of motion or speech, etc.), or by frightful or oppressive dreams, from which one wakes after extreme anxiety, in a troubled state of mind; incubus.
Hence, any overwhelming, oppressive, or stupefying influence.
A person can only be born in one place. However, he may die several times elsewhere: in the exiles and prisons, and in a homeland transformed by the occupation and oppression into a nightmare. Mahmoud Darwish
We are weighed down, every moment, by the conception and the sensation of Time. And there are but two means of escaping and forgetting this nightmare: pleasure and work. Pleasure consumes us. Work strengthens us. Let us choose. Charles Baudelaire
Seventy percent of the fish we eat is black market, fished in violation of international laws. Our ignorance makes us unwilling partners in crime. Rogue economics is turning the global market into our worst nightmare. Loretta Napoleoni