Bible Dictionary

Sheshach,

SHE'SHACH, a symbolical name for Babylon, Jer 25:26; Jer 51:41, from its goddess Shach reduplicated, as Misael is called Meshach.

Hastings' Dictionary of the Bible (1898)

SHE'SHACH, a symbolical name for Babylon, Jer 25:26; Jer 51:41, from its goddess Shach reduplicated, as Misael is called Meshach.