In message , at
23:56:18 on Thu, 6 Jan 2011, Martin Rich
remarked:
While I'm familiar with the American usage of 'bathroom' to cover all
types of bathrooms/loos etc, whether or not they contain a bathtub, I
hadn't come across these niceties of 'full' and 'half' baths.

There's also a "Jack and Jill" bathroom, which is an en-suite shared
between two bedrooms.

Note that Americans will also "wash up" in a bathroom (sic), whereas
Brits tend to do that in a sink in the kitchen!
--
Roland Perry