“Where’s the toilet?”
“In the bathroom. Duh!”
To an American, the toilet is the fixture, not the room.
And in searching for that old thread, I came across many others, most of which use the word “toilet” in the American sense. Sample thread titles include “It’s a room with a toilet in it. Get over it.” and “Why do some places segregate men’s and women’s bathrooms when there’s only one toilet in each room?”