frottage (n.) Look up frottage at Dictionary.com
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.