Cool little scraper......

[autographcollector11]

Appears to be a scraper/tool. However by looking at the worked edge can you tell what it was used for? From Wisconsin

 

[monsterrack]

Could be a thumb scraper used in scraping hides and other things. It is real hard to say because your 2nd photo makes it look like a failed knapping attempt.

 

[justonemore]

I don't think it's a tool. Nothing looks intentional, it's all random.

 

[chase2]

Have to agree with the others, natural.