A part
手洗い
Shown as a part of 1 word so far, read one way.
てあらい 1 word
- お手洗いおてあらいtoilet, restroom, bathroom (lit., a place to wash one's hands)
お手洗い · here “hand washing”
Also written with 手洗い
These words contain the character in their spelling but show no breakdown that names it, so nothing is claimed about its role in them.