/ ˈbɑːθruːm; -rʊm; NAmE ˈbæθ-/ noun
1.
a room in which there is a bath/ bathtub , a washbasin and often a toilet :
Go and wash your hands in the bathroom.
2.
( NAmE ) a room in which there is a toilet, a sink and sometimes a bath/ bathtub or shower :
I have to go to the bathroom (= use the toilet) .
Where's the bathroom? (= for example in a restaurant)
➡ note at toilet