boudoir (n.)youdaoicibaDictYouDict[boudoir 词源字典]
1777, "room where a lady may retire to be alone," from French boudoir (18c.), literally "pouting room," from bouder "to pout, sulk," which, like pout, probably ultimately is imitative of puffing.[boudoir etymology, boudoir origin, 英语词源]