Answer:
What word is a plural, but when you add an "S" to the end, it becomes singular?
I look at you, you look at me, I raise my right, you raise your left.
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.
A harvest sown and reaped on the same day in an unplowed field. Which increases without growing, remains whole though it is eaten within and without. Is useless and yet the staple of nations.
You can only have it once you have given it.
Pirates put their booty in it.