frottage (n.)youdaoicibaDictgodict[frottage 词源字典]
1933 as the name of a sexual perversion, from French frottage "rubbing, friction," from frotter "to rub," from Old French froter "to rub, wipe; beat, thrash" (12c.), from Vulgar Latin *frictare, frequentative of Latin fricare "to rub" (see friction). As a paraphilia, it is known now as frotteurism.[frottage etymology, frottage origin, 英语词源]