For ias

[nmg]

From the OED:

frottage

[a. F. frottage rubbing, friction, f. frotter to rub (see FROT v.).]

...

2. Art. The technique or process of taking a rubbing from an uneven surface, e.g. grained wood or sacking, as a point of departure for a work of art.

Comments

[ias.livejournal.com]

I told you! Oh ye of little faith

And, let me add, that if you search the Oxford reference online (which I have to do as we don't have the full OED at Bath), these are the definitions you get:

1. frottage •n.

Art the technique or process of taking a rubbing from an uneven surface to form the basis of a work of art.

(From The Concise Oxford Dictionary)

2. frottage

[From the French frotter, ‘to rub’] an adaptation of the traditional method of making a rubbing, the technique of frottage involves the making of an impression of an object such as wood, stone, or fabric by placing a sheet of paper over it and rubbing ...

(From The Concise Oxford Dictionary of Art Terms)

3. frottage

A technique of creating an image by placing a piece of paper over some rough surface such as grained wood or sacking and rubbing the paper with a crayon or pencil until it acquires an impression of the surface quality of the substance beneath. The ...

(From The Concise Oxford Dictionary of Art and Artists)

4. frottage

A technique of creating an image by placing a piece of paper over some rough surface such as grained wood or sacking and rubbing the paper with a crayon or pencil until it acquires an impression of the surface quality of the substance beneath. The ...

(From The Oxford Dictionary of Art)

5. frottage

(French: ‘rubbing'). A technique of creating an image by placing a piece of paper over some rough surface such as grained wood or sacking and rubbing the paper with a crayon or pencil until it acquires an impression of the surface quality of the ...

(From A Dictionary of Twentieth-Century Art)

6. frottage n.

rubbing up against somebody (usually in a crowd) as a means of obtaining sexual pleasure. A person displaying this sexual deviation is called a frotteur; frotteurs are almost exclusively males.

(From Concise Medical Dictionary)

7. frottage noun

M20 The practice of rubbing against or touching the (clothed) body of another person (usually in a crowd) as a means of obtaining sexual gratification.

(From The Oxford Essential Dictionary of Foreign Terms in English)

8. frotteurism n.

A paraphilia characterized by recurrent, intense sexual fantasies, urges, or behaviour involving touching or rubbing up against non-consenting people, often in crowded public places. Also called frottage.

(From A Dictionary of Psychology)

[rdmaughan.livejournal.com]

Part of me wants to ask what prompted this exchange. Then again part of me really really does not want to know.