Learner's definition of BATHROOM
1 : a room with a sink and toilet and usually a bathtub or shower
◊ In U.S. English, a bathroom is mainly thought of as a room with a toilet. In British English, a bathroom is mainly thought of as a room with a bathtub or shower.
2 US : a room in a public place with a toilet and sink
go to the bathroomUSoruse the bathroom