'Tower' in the Bible

And when he came to the tower, he took them from their hand, and bestowed them in the house: and he let the men go, and they departed.

And there stood a watchman on the tower in Jezreel, and he spied the company of Jehu as he came, and said, I see a company. And Joram said, Take an horseman, and send to meet them, and let him say, Is it peace?

And the children of Israel did secretly those things that were not right against the LORD their God, and they built them high places in all their cities, from the tower of the watchmen to the fenced city.

He smote the Philistines, even unto Gaza, and the borders thereof, from the tower of the watchmen to the fenced city.