手を洗う

wash one's hands

→ 手
phrase Common #7,761
wash one's hands Usually refers to literally washing one's hands. In some contexts, it can also mean to wash one's hands of something—to stop being involved.
JA: 食事の前に手を洗う。
EN: I wash my hands before eating.

明日の朝パパはバルトロメオで手を洗うさぞきれいになるだろうな

Tomorrow morning, Dad will wash his hands with Bartolomeo. They’ll get really clean, I bet.

— ライフ・イズ・ビューティフル (1997)

一日に何度も手を洗うよ。

I wash my hands several times a day.

“手を洗うこと”

Washing your hands

— レミーのおいしいレストラン (2007)

食品を扱う前は手を洗うこと。

Wash your hands before handling food.

トイレを使ったら、必ず水を流して手を洗うのよ。

After using the toilet, always flush and wash your hands.

手を洗うの忘れないでよ。

Don't forget to wash your hands.