the gate of the fountain: The gate leading either to the fountain of Siloam, on the east of the city, or to that of Gihon, on the west. Nehemiah 3:15; 2 Kings 18:17, 2 Kings 20:20; 2 Chronicles 32:30
the king's pool: Probably the aqueduct made by Hezekiah to bring the waters of Gihon to the city of David.