From Longman Dictionary of Contemporary Englishwashroomwash‧room /ˈwɒʃrʊm, -ruːm $ ˈwɒːʃ-, ˈwɑːʃ-/ noun [countable] American EnglishDHH a room in a public building where you can wash and use the toilet
Examples from the Corpus
washroom• She would hear tile swirl of water from the downstairs washroom, his footsteps on the tessellated floor of the hall.• I would remember if I had looked for washrooms or wells or pitchers of water.• This is the total opposite to that experienced in the recession of the early 80s when our washroom service suffered badly.• The museum is a locked door in the town hall, down the hall and to the left by the washroom.• P.S. My substitute for Woozle is a salamander in the washroom.• Mitchell trudged down the hall toward his corner office, detouring into the washroom to assess the damage to his hair.• When the house was quiet, I stole down to the washroom and then went back upstairs.• I went down to the washroom to get a drink of water, and to have a shave. 