Hebrew word in 2 Samuel 5:8 ('tsinnor') that David says his men should 'get up' to attack the Jebusites. It is translated as water shaft, ditches, gutter, trident, or, by McCarter, 'windpipe.' Reich and Shukron found a Canaanite tunnel system to the Gihon dating to the 18th c. BCE, supporting 'water shaft' with Joab entering via tunnels, though Warren's Shaft itself was probably not in use until ~200 years after David.