What is the meaning of Frottage?

To rub, especially to rub onto one surface placed upon another surface that is textured, in order to create a mottled or patterned area on the first surface.

To rub parts of the body against those of another person for sexual stimulation.

A method of making an image by placing a piece of paper against an object and then rubbing over it, usually with a pencil or charcoal.

An illustration made by means of frottage.

The practice of rubbing parts of the body against those of another person for sexual stimulation.

rubbing

frottage

frottage

Source: wiktionary.org