Int. Standard Bible Encyclopedia PISHON; PISON pi'-shon pi'-son (pishon; the King James Version): A river of EDEN (which see), said to compass the whole land of Havilah where there is gold, bdellium and onyx stone (Genesis 2:11), most probably identified with the Karun River which comes down from the mountains of Media and formerly emptied into the Persian Gulf.

Multi-Version Concordance Pishon (1 Occurrence) Genesis 2:11 The name of the first is Pishon: this is the one which flows through the whole land of Havilah, where there is gold; (WEB JPS ASV BBE NAS RSV NIV)