To have a nightmare.
Any bad, miserable, difficult or terrifying situation or experience that arouses anxiety, terror, agony or great displeasure.
A very bad or frightening dream.
A feeling of extreme anxiety or suffocation experienced during sleep; Sleep paralysis.
To be slumbering in (a state).
To be, or appear to be, in repose; to be quiet; to be unemployed, unused, or unagitated; to rest; to lie dormant.
To rest in a state of reduced consciousness.
To place into a state of hibernation.
To spin on its axis with no other perceptible motion.
To wait for a period of time without performing any action.
To be dead; to lie in the grave.
To have sexual intercourse (see sleep with).
To accommodate in beds.
To be careless, inattentive, or unconcerned; not to be vigilant; to live thoughtlessly.
To cause (a spinning top or yo-yo) to spin on its axis with no other perceptible motion.
To achieve or make happen by manner of sleep.
A night.
A state of plants, usually at night, when their leaflets approach each other and the flowers close and droop, or are covered by the folded leaves.
The hibernation of animals.
The state of reduced consciousness during which a human or animal rests in a daily rhythm.
Rheum, crusty or gummy discharge found in the corner of the eyes after waking, whether real or a figurative objectification of sleep (in the sense of reduced consciousness).
An act or instance of sleeping.