寝

owing a lot to someone; being indebted; never forgetting someone who has done a favour

nap

nap; catnap; siesta

Archaic

stopping at an inn

sleeping together

sleeping away from home; overnight stay when traveling

sitting up all night; staying up all night

Idiomatic expression

to sleep like a log; to sleep like a baby

feigned sleep; playing possum

Colloquial

long, narrow house (e.g. traditional Kyoto townhouse); eel bed

going to bed early

taking an afternoon nap

friends who sleep next to each other (without engaging in sexual activities)

feigned sleep; playing possum

sleeping in a ship

sleeping on the surface of the water (of a bird)

restless sleep

casually sleeping together (e.g. unmarried couple)

comfortable rest or sleep

living room and bedroom; bed-sitter

Proverb

one should be satisfied without desiring more wealth and rank than necessary; waking, half a tatami mat; sleeping, a single tatami mat

sleeping on one's side; lying on one's side

fast asleep; bombed; crashed

Proverb

there's a reason behind every action; a burglar's midday nap (is taken so that he can rob people's houses in the night)

sleeping while embracing another

staying up all night

waterfowl sleeping while floating on water

to let money lie idle

lonesome sleep; sleeping alone