Sheshach. [She'shach]
Mystical name applied to Babylon. Jeremiah 25:26; Jeremiah 51:41; cf. Jeremiah 51:1. The meaning of the word is not known. According to Jerome the name Babylon, from Babel, was made up of the letters B B L (the 2nd and the 12th letters of the Hebrew alphabet) these were changed into SH SH CH (the 2nd and the 12th letters reckoning from the end of the same alphabet), a mode well known to later Jews. It has been supposed that the Jews made this alteration in the name in order that they might speak of the judgements coming upon Babylon without giving offence to those who had carried them away captive.