Jeremiah often wrote prophecy in the form of poetry. Hebrew poetry uses different kinds of parallelism. (See: [[rc://en/ta/man/jit/writing-poetry]] and [[rc://en/ta/man/jit/figs-parallelism]])
Possible meanings are 1) "a wind that destroys" or 2) "the spirit of a destroyer." This would mean that Yahweh would cause or inspire the enemy army to go and attack Babylon.
This is code name for Chaldea, a region of Babylonia. It is not clear why Jeremiah uses this name here, so you may want to translate as "Chaldea" or "Babylonia." (See: [[rc://en/ta/man/jit/translate-names]])