'Gateway' in the Bible

When Abner returned to Hebron, Joab pulled him aside to the middle of the gateway, as if to speak to him privately, and there Joab stabbed him in the stomach. So Abner died in revenge for the death of Asahel, Joab’s brother.

He would get up early and stand beside the road to the gate [of the city, where court was held]; and when any man who had a dispute came to the king for judgment, Absalom would call to him, “From what city are you?” And he would say, “Your servant is from one of the tribes of Israel.”

Meanwhile, David was sitting between the inner and outer gates of the city. The watchman was up on the roof of the gateway near the walls, looking around, and there was a man running by himself!

So the king got up and took his seat in the gateway. When the army was informed, "The king is sitting in the gateway!" they all gathered together in his presence.