Answer:
The sharp slim blade, that cuts the wind. What is it?
What stays on the ground but never gets dirty?
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.
Halo of water, tongue of wood. Skin of stone, long I've stood. My fingers short reach to the sky. Inside my heart men live and die.
I open wide and tight I shut, Sharp am I and paper-cut fingers too, so do take care, I'm good and bad, so best beware.
What covers its face with its hands, speaks no language, yet most known what it's saying?