English
Etymology
Of the category of euphemism known as indirection, euphemistically identifying the lavatory as a place to powder one's nose (apply makeup|make-up). Origin 1905-10; first attested 1941.
Noun
en-noun
#euphemism A women's restroom, especially a restroom provided for guests in one's home, or a women's restroom in a public venue such as a restaurant, boutique, or hotel lobby.
See also
powder one's nose
take a powder
ru:powder room
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