Zoan = "place of departure"

 1) an ancient city of lower Egypt called Tanis by the Greeks; located
    on the eastern bank of the Tanitic branch of the Nile; the capital
    of the Shepherd dynasty, built 7 years after Hebron and existing
    before Abraham and the dwelling place of the Pharaoh at the time
    of the exodus
    1a) modern 'San'