0 a room in a house with a toilet, shower, etc. -- salle [ feminine ] de bain
the sink in the bathroom le lavabo dans la salle de bain
1 to use the toilet -- aller aux toilettes
Mom, I have to go to the bathroom. Maman, il faut que j’aille aux toilettes.
2 a room in a house etc which contains a bath -- salle de bains
an en-suite bathroom (= one that is joined onto a bedroom).
3 a lavatory -- toilettes
I need to use the bathroom (= use the lavatory).
