'Rampart' in the Bible

And they came and besieged him in Abel of Beth-maacah, and they cast up a mound against the city, and it stood against the rampart; and all the people that were with Joab battered the wall, to throw it down.

And of Jezebel also spake Jehovah, saying, The dogs shall eat Jezebel by the rampart of Jezreel.

Jehovah hath purposed to destroy the wall of the daughter of Zion; He hath stretched out the line, he hath not withdrawn his hand from destroying; And he hath made the rampart and wall to lament; they languish together.

Art thou better than No-amon, that was situate among the rivers, that had the waters round about her; whose rampart was the sea, and her wall was of the sea?