Do you have any pics with it side by side of something else for size comparison? It looks as if it was made to snag something, so that it could not get away! in any case, it would put a hurtin' on anything that was struck by it.
Frank
Hey fano,
Excellent find, sir. Please do better photos. It looks very Archaic:
<img src="http://www.treasurenet.com/forums/attachment.php?attachmentid=827523"/> Paleo-Indians in Virginia
What part of the world is it from?
It called an eccentric. Possibably used by a novice flint knapper to practise making notches.