'Pools' in the Bible

Thy neck is as a tower of ivory; Thine eyes, like the pools in Heshbon, By the gate of Bath-rabbim; Thy nose like the tower of Lebanon, Which looketh toward Damascus;

And I will make it a possession for the bittern, and pools of water; and I will sweep it with the besom of destruction, saith Jehovah of hosts.

I will lay waste mountains and hills, and dry up all their herbs; and I will make the rivers islands, and I will dry up the pools.

But its marshes and its pools shall not be healed; they shall be given up to salt.