'Tower' in the Bible

And the watchman is standing on the tower in Jezreel, and seeth the company of Jehu in his coming, and saith, 'A company I see;' and Joram saith, 'Take a rider and send to meet them, and let him say, Is there peace?'

and the sons of Israel do covertly things that are not right against Jehovah their God, and build for them high places in all their cities, from a tower of the watchers unto the fenced city,

he hath smitten the Philistines unto Gaza, and its borders, from a tower of watchers unto the fenced city.