The name Pishon in the Bible
The Pishon is the first of four rivers in Eden (the others are Gihon, Haddakel and Parat—Genesis 2:11-14). The Haddakel and Parat are known today as the Tigris and Euphrates, but the Pishon and Gihon seem to have no alter-ego's in observable reality. One (slightly daring) theory is that these four rivers represent the supersymmetry that may or may not lay at the heart of creation.
Of the river Pishon it is said that it "flows around the whole land of Havilah, where there is gold." (Genesis 2:11)
Etymology of the name Pishon
The name Pishon comes from פוש (push) meaning to spring about or to be scattered:
The name Pishon probably refers to a river that originates from a spring and forms into a delta. Jones' Dictionary of Old Testament Proper Names reads Great Diffusion. NOBSE Study Bible Name List reads Freely Flowing.