water closet

e.g.1

Indicating the location of restrooms in a building

"Restrooms are on the left side 🚾"

e.g.2

Asking if there's a toilet nearby

"Is there any place around here with restrooms? 🚾"

e.g.3

Mentioning you need to use the bathroom

"Be right back, heading to the restroom 🚾"