A line - Compare Isaiah 34:11. The destruction is systematic and thorough.
Related Commentaries of Lamentations 2:8
Lamentations 2:8
8 The LORD hath purposed to destroy the wall of the daughter of Zion: he hath stretched out a line, he hath not withdrawn his hand from destroying:e therefore he made the rampart and the wall to lament; they languished together.