washroom

Etymology
From in reference to its sinks, but generally used euphemistically outside of Canada and the United States.

Noun

 * 1) A room intended to wash the face and hands.
 * 2)  A room with a toilet, particularly a public toilet.
 * 1)  A room with a toilet, particularly a public toilet.

Usage notes
The term originated in the US but has been largely replaced by except in certain regions of the country. It continues to be the most common word for a public facility in Canadian English.

Synonyms

 * See Thesaurus:bathroom
 * See Thesaurus:bathroom