Definition from Wiktionary, the free dictionary
From Old French froter (“rub, polish”)
- (slang) To publicly rub one's genitals against someone for sexual gratification, especially without the other's consent or knowledge. (In this sense it is related to frotteurism and not frottage.)
- (archaic) To rub, chafe.
- (tanning) To work leather by rubbing.
to rub someone for sexual gratification
- A non-penetrative sex in which two males rub each other's penises.