'Palm' in the Bible

So the LORD has cut off from Israel head and tail, palm branch and reed in a single day

As a result, there will be nothing for Egypt that head or tail, palm branch or reed, can do.

Take note: you're relying on Egypt, that splintered reed of a staff, which pierces the palm of anyone who leans on it. This is what Pharaoh king of Egypt is like to everybody who depends on him!