restroom

This term is primarily used in North American English as a polite, indirect way to refer to a toilet or bathroom. It carries a formal and sanitized connotation, designed to avoid the bluntness of words like toilet, which can be perceived as too graphic or impolite in social settings.

In a residential context, it specifically refers to a room with a toilet and sink but typically lacks a bathtub or shower. This distinguishes it from a full bathroom, which includes bathing facilities.