おねんね

sleep, nap

→ 御年
noun Rare #41,228
sleep, nap A childish or affectionate expression, often used when talking to or about babies and young children.
JA: 赤ちゃんのおねんねの時間です。
EN: It’s the baby’s nap time.

おねんねの時間よ

It’s time to go night-night.

いいこおねんねしてて

Be a good little one and go to sleep, okay?

— 千と千尋の神隠し (2001)

もっとおねんねしなさい

You should get some more sleep.

— 鏡 (1975)

いいこおねんねしてたのに

You were sleeping so peacefully, too.

— 千と千尋の神隠し (2001)