1.
buttocks, bottom
The fleshy part of the body that one sits on.
お尻が痛い。
My bottom hurts.
赤ちゃんのお尻を拭く。
I wipe the baby's bottom.
長時間座っていたらお尻が痺れた。
My bottom went numb from sitting for a long time.
お尻 is the standard word for buttocks in everyday Japanese.
REGISTER:
The お prefix makes this a polite form. The plain form 尻 exists but sounds rougher. お尻 is appropriate in most situations.
COMMON EXPRESSIONS:
- お尻を拭く: to wipe one's bottom
- お尻を叩く: to spank
- お尻が痛い: my bottom hurts
- お尻に火がつく: to be in a tight spot (lit. fire on one's rear)
ALTERNATIVES:
- 尻: plain form (rougher)
- 臀部: medical/formal term
- ヒップ: hips (often used for shape/fashion contexts)