MTK, this appears to be a machete with a hole towards the tip that may have been meant to fit over a nut and used to undo or tighten it. Can you tells us where you found this specimen or any other information about it? That may help in getting some discussion started. It could be military issue.
Here are a couple of modern CONDOR machetes that have a similar blade shape and a different shaped hole in the blade but in much the same place. I found them
here. These are made in El Salvador.
.