Lithic point, perhaps?

[Detector mom]

Found in Hoboken, NJ, on the shore. (Across from Manhattan)

 

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[Plug N Play]

Hard to make out the details in pictures.
Seems to have the traits of an ancient stone tool style, ... more a scraper than a point.
Flat bottom with small secondary chips forming cutting edges along the lower edges.

Try Google "limace artifact" and see if it looks similar.

 

[Detector mom]

Will do. Photo stinks, sorry. I’m always in a rush, sigh.

 

[MidMoTreasure]

Looks natural to me. There are newer breaks on the edges of the flake giving it the appearance of being serrated. You can tell the newer chips by the lighter color, where the natural patina of the rock is darker.

That said, the Indians did make and use a lot of simple flake blades that look pretty similar to your rock.

 

[Possum]

It looks natural, however if it has signs of actual knapping, the it's either a knife or scraper. The serrated looking edge, if it was knapped, would lead me to lean more towards a hand knife. Better pic's would help... "D"