I fell into a deep sleep.
My sleep was light and I woke up many times.
Figurative use for something being inactive or dormant, like a machine or project.
The plan awoke from a long period of inactivity.
death; eternal sleep
Euphemistic use for death, often in poetic or formal contexts.
He entered an eternal sleep.
Lately my sleep has been light, and I can't get rid of my fatigue.
The noise outside disturbed my sleep.
Quiet music induces sleep.
sleeping sickness
mimosa; sensitive plant
Kana spelling is common in everyday writing, especially for the abstract or euphemistic senses.
Rarely used kanji form; 眠り is preferred.