托印畫的英文是什麼？

frottage,
or simply, rubbing.

for more explanation, please visit:
http://en.wikipedia.org/wiki/Frottage_(art)
http://en.wikipedia.org/wiki/Rubbing

The request prints

I have done it at school, I know what it is called so that must be the correct answer.
Hope I helped you!
圖片參考：http://l.yimg.com/f/i/tw/ugc/rte/smiley_1.gif
Cheers.