köken: Originally "remote place", at first in Middle Low German afort (16th century). The contemporary sense as a euphemism since the 18th century. Analysable as ab (“off, away”) + Ort (“place”).
So etwas habe ich seit Jahrzehnten nicht mehr erlebt. Finstere Halle, Türkenklo, streng riechend wie schwäbische Aborte vor fünfzig Jahren.
köken: Learned borrowing from Katharevousa ἀποχωρητήριον (apochoritírion) (first attested in 1888), from the past stem αποχωρη- (apochori-) of αποχωρώ (apochoró, “to withdraw, pull out”) + -τήριο (-tírio, “place suffix”).
bathroom, restroom, lavatory, toilet · a pachinko machine one can use leftover balls on.
eş: トイレ, おてあらい, 化粧室, 厠, ちょうずば, はばかり
köken: Appears to be a coinage in Japanese from Middle Chinese-derived roots, as a compound of 便 (ben, “convenience, ease”, also meaning “bodily waste; bowel movement”) + 所 (sho, “place”). The sho changes to jo as an instance of rendaku (連濁). Compare English expressions seat of ease, house of ease, also pooper, shitter. First cited in works from the late 1400s.
köken: First attested in the Worin seokbo (月印釋譜 / 월인석보), 1459, as Middle Korean 뒷〯간 (Yale: twǔy-s-kàn). 뒤 (dwi, “back”) + -ㅅ- (-s-) + 간(間) (gan, “room”).
köken: Ultimately from Latin ba(l)neum, via the plural ba(l)nea. The stressed a in Romanian is inconsistent with râie, tămâie < Latin arānea, *thȳmānea. Hence baie may have been borrowed from Proto-Slavic *baňa; compare etymology 2 below (via Hungarian). Note also the consistent masculine gender of inherited reflexes of Latin balneum such as Italian bagno, French bain, etc.