'Watchtower' in the Bible

And he dug it and cleared it of stones, and he planted it [with] choice vines, and he built a watchtower in the middle of it, and he even hewed out a wine vat in it, and he waited for [it] to yield grapes-- but it yielded wild grapes.

Then [the] {watchman} called, "Lord, I [am] standing on [the] watchtower continually by day, and I [am] standing at my post {throughout} the night.

For [the] palace will be forsaken, [the] {crowded city} deserted; [the] hill and [the] watchtower will become a cave forever, [the] joy of wild asses, a pasture {for} flocks.