sleeping pill; sleep medication
(one's) sleeping hours; hours of sleep
sound sleep; good sleep; quiet sleep
hibernation; winter sleep; torpor
to take a nap; to catch forty winks; to catch some Z's
sleeplessness; insomnia; wakefulness
no sleep or rest; working day and night
nap room (in an office, fire station, etc.)
to sleep all day; to idle away one's time; to loaf all day
sleeplessness; insomnia; wakefulness
to hypnotize; to hypnotise
idle slumber; indolence; inactivity
hypnopaedia; hypnopedia; sleep-learning
falling asleep; sleep onset
auto-hypnosis; self-hypnosis; self-induced hypnotism
disturbance of sleep; nuisance in the middle of the night
deep sleep; sleep soundly
in spring one sleeps a sleep that knows no dawn; in spring one sleeps like a log
going to sleep; falling asleep; sleeping
sleeping medicine; hypnotic; soporific
sleep apnea syndrome; SAS
artificial hibernation; induced hibernation
anhydrobiosis; cryptobiosis; drought dormancy
drowsiness; somnolence; somnolentia; fatigue; lethargy
sleep debt; sleep deficit
sleeping sickness; sleeping disease
the first sleep (of silkworms)
sleepwalking; somnambulism
fatal familial insomnia; FFI
short sleeper; person who doesn't need much sleep
sleep onset REM period; SOREMP
good appetite and pleasant sleep; enjoying one's food and sleeping well
inactive bank account (no withdrawals or deposits made, and to which the owner's rights have been terminated)