KanjiJLPT N3
Lie Down

lie down, sleep, rest, bed, remain unsold

Mnemonic

Under the roof, you lick a popsicle and drag a comb through your hair. You lift off your crown, whisper "once more," and lie down to sleep. Same bedtime ritual every night—popsicle, comb, crown off, lie down.
Additional thoughts
Picture a royal figure's nightly routine: under a grand roof, they finish a popsicle, comb their hair, remove their crown, and once more lie down. The repetitive 'once more' reinforces it as a nightly habit.
Quick recall
Under the roof, popsicle done, comb out, crown off, once more lie down.

Details

The keyword for 寝 is lie down. This kanji refers to the act of lying down, typically to sleep or rest. It encompasses the broader meaning of sleeping, going to bed, or reclining in a horizontal position. It can also refer to a bedroom or sleeping quarters, as well as the state of being asleep.
On'yomi
しん
Kun'yomi
ね.る、ね.かす、い.ぬ、みたまや、や.める