This is the 9007th most frequent Japanese word.
洗う
"洗う" means "to wash."
In this sentence, '洗う' is used in the context of cleaning one's hands.
私は手を洗う必要があります。
I need to wash my hands.
Here, '洗う' denotes the action of cleaning a car, demonstrating its application to objects.
彼は車を洗っている。
He is washing the car.
This example uses '洗う' to imply rinsing or cleaning vegetables as preparation for consumption.