What is it?

[Tony (Charleston WV)]

A friend found three of these in the woods near his home near Charleston.  He's unaware of any particular industrial activity in the vicinity that might help identify it. No markings. It's around 6-8" long.

I almost had him convinced that it was the business end of a whale harpoon used by native natives back before the end of the last ice age, but I couldn't keep a straight face long enough to pull it off. Fun while it lasted, though.

[dry heat]

Could be part of a sickle bar mower. The teeth were replaceable  and the cutters under them could be sharpened and replaced too.

[Herb G]

Looks like an old logging spike. Might have had a chain wrapped around it somehow too.
That's what it looks like to me.

[Greg Jones]

dry heat has it-it's a guard for a sickle bar mower.

[blackhat]

Or swather or straight cut combine header.