1)
What is "Kipod"?
1.
Rashi: It is a hedgehog (a kind of Sheretz).
2.
Radak: This is like it says about Churban Edom "vi'Yreshuha Ka'as v'Kipod" (34:11). It is Kenapod in Arabic, or Tartog in old French. It is always found in a place of water.
3.
Malbim: "Morash Kipod" means that it will be forever desolate.
2)
What is the meaning of "v'Teiteisiha"?
1.
Rashi (from Megilah 18a): I will sweep. Radak - in Tanach, brooms are called Ya'im - "v'Ya'ah Varad" (28:17). Just like they sweep the house, and the floor remains clean, so Bavel will be clean (empty) of its people, honor, wealth and everything. The sweeping will be of destruction.