bathroom

1. bathroom (noun) — sense 1

Definition: A room containing a shower or bathtub, and (typically but not necessarily) a toilet.

Example: “down this ‘ere little stair–mind your ‘ead, mum–everythink is modern, put in by Mr. Noakes w’en ‘e took to lettin’ for the summer.”
”A bathroom?” asked Harriet hopefully.
”Well, no, m’lady, not a bathroom,” replied Mrs. Ruddle, as though that were too much to expect, “but everythink else is quite modern as you’ll find–only requirin’ to be pumped up night and morning in the scullery.”

2. bathroom (noun) — sense 2

Definition: A lavatory: a room containing a toilet and (typically but not necessarily) a bathtub.

Example: Most Americans don't know 'WC' and many Brits mock 'bathroom' but almost everyone understands 'toilet' or 'lavatory'.

3. bathroom (verb) — sense 3

Definition: To assist a patient with using the toilet and general personal hygiene.