washlet
n.— «Japanese bathrooms are the apotheosis of the nation’s fascination with both cleanliness and high-tech gadgetry. The toilet at Tokyo Midtown may have been a rather basic model of what is called a “washlet,” but its options included a warmed seat, bidet cleansing, spray cleansing (a rather different angle and spray from the bidet option), a “powerful deodorizer” and, of course, the “flushing sound” with adjustable volume.» —“The Discreet Charm of the Ladies Room” by Hannah Beech Time Sept. 11, 2007. (source: Double-Tongued Dictionary)