A restroom is a place where people can go to use the toilet and wash their hands. It's usually located in public buildings like restaurants, offices, or on highways.
You might think of it as a bathroom outside your home or apartment, but restrooms are everywhere you need them - they're not just for personal use anymore. When you're out running errands or traveling, you'll often see signs saying "Restroom" or "Public Restroom". That's where you go to take care of business! It's also common for restaurants and cafes to have a restroom specifically for customers, so people can freshen up before they leave.
(US, Philippines, euphemistic) A room containing a public toilet: a public lavatory.
Example: Could you tell me where I can find the restroom?
