|Easton's Bible Dictionary|
A water-course or channel (Job 38:25). The "conduit of the upper pool" (Isaiah 7:3) was formed by Hezekiah for the purpose of conveying the waters from the upper pool in the valley of Gihon to the west side of the city of David (2 Kings 18:17; 20:20; 2 Chronicles 32:30). In carrying out this work he stopped "the waters of the fountains which were without the city" i.e., "the upper water-course of Gihon", and conveyed it down from the west through a canal into the city, so that in case of a siege the inhabitants of the city might have a supply of water, which would thus be withdrawn from the enemy. (see SILOAM.)
There are also the remains of a conduit which conducted water from the so-called "Pools of Solomon," beyond Bethlehem, into the city. Water is still conveyed into the city from the fountains which supplied these pools by a channel which crosses the valley of Hinnom.
Noah Webster's Dictionary
1. (n.) A pipe, canal, channel, or passage for conveying water or fluid.
2. (n.) A structure forming a reservoir for water.
3. (n.) A narrow passage for private communication.
Int. Standard Bible Encyclopedia
Conduit (5 Occurrences)
2 Kings 18:17 The king of Assyria sent Tartan and Rabsaris and Rabshakeh from Lachish to king Hezekiah with a great army to Jerusalem. They went up and came to Jerusalem. When they were come up, they came and stood by the conduit of the upper pool, which is in the highway of the fuller's field. (WEB KJV JPS ASV WBS YLT NAS RSV)
2 Kings 20:20 Now the rest of the acts of Hezekiah, and all his might, and how he made the pool, and the conduit, and brought water into the city, aren't they written in the book of the chronicles of the kings of Judah? (WEB KJV JPS ASV WBS YLT NAS RSV)
Job 38:25 Who hath divided for the flood a conduit? And a way for the lightning of the voices? (YLT)
Isaiah 7:3 Then Yahweh said to Isaiah, "Go out now to meet Ahaz, you, and Shearjashub your son, at the end of the conduit of the upper pool, on the highway of the fuller's field. (WEB KJV JPS ASV WBS YLT NAS RSV)
Isaiah 36:2 And the king of Assyria sent Rabshakeh from Lachish to Jerusalem unto king Hezekiah with a great army. And he stood by the conduit of the upper pool in the highway of the fuller's field. (KJV JPS ASV WBS YLT NAS RSV)