What are the eraser "lint" or "shavings" called?

TheDevilInside
We found out today that one of our students collects colorful eraser "leftovers". Like when you erase a colored pencil mark and the "lint" or whatever that comes out of it is colorful, and you collect them in a plastic bag. Don't ask. It's a kid... Better than collecting boogers...

Question is, what do you call these things?
What are the eraser "lint" or "shavings" called?
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