פירוש על תהילים 137:7

Raze it Heb. עָרוּ is an expression of destruction, and so (Jer. 51:58): “The broad walls of Babylon shall be overthrown (תתערער),” and so (Hab. 3:13): “baring (ערות) the foundation.” It is used only for something whose roots are uprooted from the ground.