bathroom Syllabification: (bath·room)Pronunciation: /ˈbaTHˌro͞om, -ˌro͝om/Translate bathroom | into French | into German | into Italian | into Spanish Definition of bathroom noun a room containing a bathtub or a shower and usually also a sink and a toilet. a set of matching fixtures, especially as sold together, to be fitted in a bathroom. a room containing a toilet:I have to go to the bathroomPhrases go to (or use) the bathroom urinate or defecate. bathroom in other Oxford dictionaries Definition of bathroom in the British & World English dictionary