Definitions

1. noun

A person who habitually touches or brushes against others in a sexual manner, especially in public places, without their consent.

“The police were investigating allegations of a frotteur in the local subway system.”

2. noun

A person who engages in frotteurism, a form of sexual gratification derived from touching or brushing against others in a sexual manner.

“The psychologist specialized in treating individuals with frotteurism.”