Easton's Bible Dictionary: M. G. Easton, M.A., D.D.
Rivers of Babylon
(Ps. 137:1), i.e., of the whole country of Babylonia, e.g., the Tigris, Euphrates, Chalonas, the Ulai, and the numerous canals.Original from The Bible Foundation - bf.org. They claim public domain status for their original text.